Chemistry for Today General, Organic, and Biochemistry 9th Edition By Spencer L. Seager - Test Bank

Chemistry for Today General, Organic, and Biochemistry 9th Edition By Spencer L. Seager – Test Bank

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Sample Questions Are Posted Below

1. Which of the following statements is not true about the reaction?

2 CH₄ + 3 O₂ → 2 CO₂ + 4 H₂O

	a.	Water is a reactant.
	b.	Methane and carbon dioxide are products.
	c.	Methane is a product.
	d.	Water and carbon dioxide are products.

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

2. Which of the following reactions is correctly balanced?

	a.	N₂ + H → 2NH₃	b.	2H₂O + C → CO + 2H₂
	c.	Zn + 2HCl → H₂ + ZnCl₂	d.	CO + O₂ → CO₂

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

3. Which set of coefficients balances the equation?

____ CH₄ → ____C₃H₈ + ____ H₂

3,1,1

3,2,1

3,1,2

6,2,2

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

4. When the equation below is properly balanced, what coefficient is in front of KCl?

KClO₃ → KCl + O₂

ANSWER:	b
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

5. Propane, C₃H₈, burns to produce carbon dioxide and water by the equation below. What is the coefficient in front of the carbon dioxide in the balanced equation?

C₃H₈ + O₂ → CO₂ + H₂O

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

6. Consider the reactants and propose the right side of the equation.

Mg + H₂SO₄ → _______

no reaction

MgHSO₄

MgSO₄ + H₂

MgH₂ + SO₄

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

7. Consider the reactants in the partial equation given. Which choice is a product?

H₃PO₄ + Sr(OH)₂ → ____

no reaction

SrH₃PO₅

SrH₅PO₆

Sr₃(PO₄)₂

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

8. Which species would be considered a spectator ion based on the following equation?

Ba²⁺ + 2NO₃− + 2Na⁺ + SO₄²⁺ → BaSO_4(s) + 2NO₃− + 2Na⁺

Ba²⁺

SO₄²⁺

BaSO₄

2NO₃−

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

9. A REDOX reaction can also be a(n)

	a.	combination reaction.	b.	single replacement reaction.
	c.	decomposition reaction.	d.	More than one response is correct.

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

10. Which of the following is an oxidizing agent?

O₂

H₂

H₂O

HCl

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

11. Single replacement reactions are always

	a.	redox reactions.	b.	nonredox reactions.
	c.	combination reactions.	d.	decomposition reactions.

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

12. Which of the following equations (not balanced) represents an oxidation-reduction process?

	a.	AgNO₃ + NaCl → AgCl + NaNO₃	b.	C + O₂ → CO₂
	c.	C₂H₄ + O₂ → CO₂ + H₂O	d.	more than one response is correct

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

13. What is the oxidation number of Cl in HClO₃?

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

14. What is the oxidation number of Br in ?

−1

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

15. What is the oxidation number of Mn in KMnO₄?

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

16. In which of the following does an element have an oxidation number of +4?

TiO₂

HBr

SO₃

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

17. Which of the following contains the metal with the highest oxidation number?

CaCl₂

NaCl

FeCl₃

CuCl₂

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

18. What substance is oxidized in the following reaction?

4HCl + MnO₂ → Cl₂ + 2H₂O + MnCl₂

Cl in HCl

Mn in MnO₂

H in HCl

O in MnO₂

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

19. What substance is reduced in the following reaction?

4HCl + MnO₂ → Cl₂ + 2H₂O + MnCl₂

Cl in HCl

Mn in MnO₂

H in HCl

O in MnO₂

ANSWER:	b
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

20. What is the oxidizing agent in the following reaction?

4HCl + MnO₂ → Cl₂ + 2H₂O + MnCl₂

HCl

Cl₂

MnO₂

MnCl₂

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

21. What is the reducing agent in the following reaction?

4HCl + MnO₂ → Cl₂ + 2H₂O + MnCl₂

HCl

Cl₂

MnO₂

MnCl₂

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

22. Which of the following is a decomposition reaction?

	a.	SO₂ + O₂ → 2SO₃	b.	2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O
	c.	2H₂O₂ → 2H₂O + O₂	d.	AgNO₃ + NaCl → AgCl + NaNO₃

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

23. Which of the following is a combination reaction?

	a.	SO₂ + O₂ → 2SO₃	b.	2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O
	c.	2H₂O₂ → 2H₂O + O₂	d.	AgNO₃ + NaCl → AgCl + NaNO₃

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

24. Which of the following is a single replacement reaction?

	a.	CuO + H₂ → Cu + H₂O	b.	HBr + KOH → H₂O + KBr
	c.	SO₂ + H₂O → H₂SO₃	d.	2HI → I₂ + H₂

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

25. Which of the following is a double replacement reaction?

	a.	CuO + H₂ → Cu + H₂O	b.	HBr + KOH → H₂O + KBr
	c.	SO₂ + H₂O → H₂SO₃	d.	2HI → I₂ + H₂

ANSWER:	b
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

26. Barium sulfate is often ingested to aid in the diagnosis of GI tract disorders. The equation for its production is Ba²⁺ + SO → BaSO₄(s). What type of equation is this?

	a.	a total ionic equation	b.	a full equation
	c.	an oxidation-reduction equation	d.	a net ionic equation

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

27. Which ions in the following reaction would be classified as spectator ions?

Zn + 2H⁺ + 2Cl → Zn²⁺ + 2Cl− + H₂

	a.	Zn²⁺	b.	H⁺
	c.	Cl−	d.	More than one response is correct.

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

28. Which ions will appear in the total ionic equation for the following reaction?

	a.	and	b.	and
	c.	, , and H⁺	d.	, , , and

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

29. For the reaction of HCl and NaOH, which of the following type of chemicals will appear in the net equation?

weak acid

weak base

salt

water

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

30. In the equation for an endothermic reaction, the word “heat” appears

	a.	on the right side.	b.	on the left side.
	c.	on both sides.	d.	on neither side.

ANSWER:	b
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

31. The energy involved in chemical reactions

	a.	always appears as heat.	b.	always appears as light.
	c.	always appears as electricity.	d.	can take many forms.

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

32. Given the equation 2CO + O₂ → 2CO₂, how many grams of CO₂ form if 34.0 grams of CO are combined with excess oxygen?

53.4

21.6

145

107

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

33. Oxygen can be prepared in the lab by heating potassium chlorate in the presence of a catalyst. The reaction is 2KClO₃ → 2KCl + 3O₂. How many moles of O₂ could be obtained from one mole of KClO₃?

1.5

3.0

1.0

2.0

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

34. The Haber Process is a method for the production of ammonia, an important chemical intermediate. The reaction for this process is: N₂ + 3H₂ → 2NH₃. When the equation is correctly interpreted in terms of moles, how many moles of H₂ will react with one mole of N₂?

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

35. How many grams of N₂ are required to completely react with 3.03 grams of H₂ for the following balanced chemical equation? N₂ + 3H₂ → 2NH₃

1.00

6.00

14.0

28.0

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

36. The Haber Process is a method for the production of ammonia, an important chemical intermediate. The reaction for this process is

N₂ + 3H₂ → 2NH₃

According to the mole interpretation, how many grams of NH₃ could be produced by the complete reaction of 2.80 grams of N₂ and excess H₂?

34.0

17.0

3.10

3.40

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

37. In the reaction 2H₂O → 2H₂ + O₂, 2.0 mol water will produce how many grams of O₂?

ANSWER:	b
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

38. In the reaction 2CH₄ + O₂ → 2CO + 4H₂, how many molecules of CO will be produced by the complete reaction of 1.60 grams of CH₄?

12.0 × 10²³

3.01 × 10²²

6.02 × 10²²

2.00

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

39. If 5 grams of CO and 5 grams of O₂ are combined according to the reaction, which is the limiting reagent? 2CO + O₂ → 2CO₂

CO₂

O₂

CO and O₂

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

40. Acetylene, C₂H₂, burns according to the following reaction: C₂H₂+5O₂ → 4CO₂+2H₂O. Suppose 1.20 g of C₂H₂ is mixed with 3.50 g of O₂ in a closed, steel container, and the mixture is ignited. What substances will be found in the mixture left when the burning is complete?

	a.	CO₂ and H₂	b.	O₂, CO₂, and H₂O
	c.	C₂H₂, CO₂, and H₂O	d.	O₂, C₂H₂, CO₂, and H₂O

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

41. Suppose 2.43 g of magnesium is reacted with 3.20 g of oxygen: 2Mg + O₂ → 2MgO. How many grams of MgO will be produced?

5.63

1.27

8.06

4.03

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

42. Tincture of iodine is an antiseptic. Which of the following is another antiseptic?

	a.	5% sodium hypochlorite	b.	3% hydrogen peroxide
	c.	ozone	d.	All are antiseptics

ANSWER:	b
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

43. What are coefficients needed to balance the following reaction?

2 CH₄ + ____ O₂ → ____ CO₂ + ____ H₂O

8,2,4

4,1,2

4,2,4

none of these

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

44. According to the law of conservation of matter, which of the following may NEVER occur as a result of a chemical reaction?

	a.	creation of new chemical species.	b.	reaction of starting materials.
	c.	rearranged to form new substances.	d.	reduction in total mass.

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

45. Which is not a meaning of oxidation?

	a.	to gain electrons	b.	to lose hydrogen
	c.	to combine with oxygen	d.	to lose electrons

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

46. The modern definition of oxidation is a process

	a.	involving a reaction with oxygen.	b.	in which hydrogen is gained.
	c.	in which electrons are gained.	d.	none of the choices.

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

47. Tests are to be conducted on new anti-cancer drug and you are to prepare a fresh supply for the human subject studies. You discover that you were able to produce 1.345 g of this substance although it was theoretically possible to make 1.433 g. What was the percent yield for this synthesis?

93.859 %

93.86 %

94 %

0.9386 %

ANSWER:	b
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

48. A percentage yield less than 100% is often obtained in a reaction. What is(are) the reason for obtaining less than theoretically predicted?

	a.	Side reactions occurred	b.	poor laboratory technique
	c.	reaction did not go to completion	d.	all of the choices

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

49. A percentage yield greater than 100% has been reported in a scientific paper you are assigned to read. What would be a reasonable explanation for this?

	a.	A lack of training of the professor who published the study.
	b.	The product was measured more than once.
	c.	Small measurement errors could have caused this to occur.
	d.	It must be a typographical error since yields can’t exceed 100%.

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

50. Which of the following types of chemical reaction classes always involve oxidation?

	a.	single replacement	b.	double replacement
	c.	combination	d.	decomposition

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

51. When the following equation is balanced, how many oxygen atoms are present on the reactant side of the equation? C₂H₆ + O₂ → CO₂ + H₂O

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

52. When nitrogen (N₂) reacts with sodium (Na), sodium nitride (Na₃N) is formed. The balanced equation for the reaction would be:

	a.		b.
	c.		d.

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

53. The reaction below would be considered _____ .

CaCO₃ + heat → CaO + CO₂

	a.	an endothermic combination.	b.	an exothermic combination.
	c.	an endothermic decomposition.	d.	an exothermic decomposition.

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

54. Which of the following conversion factors would allow one to calculate the amount of PbI₂ produced from a given amount of NaI in the following unbalanced reaction?

Pb(NO₃)₂ + Nal → Pbl₂ + NaNO₃

ANSWER:	b
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

55. The following would represent what type of chemical reaction?

	a.	decomposition.	b.	combination.
	c.	single replacement.	d.	double replacement.

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

56. Automotive car batteries rely on the reaction shown below. Identify the spectator ion(s).

PbO₂(s) + 4 H⁺(aq) + 2 SO₄^2-(aq) + Pb(s) → 2 PbSO₄(s) + 2 H₂O(l)

	a.	SO₄^2-	b.	H⁺
	c.	H⁺ and SO₄^2-	d.	There are no spectator ions.

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

57. What is the assigned oxidation number for molybdenum in aluminum molybdate, Al₂(MoO₄)₃?

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

58. A container is filled with 4.0 g H₂ and 5.0 g O₂. The mixture is ignited to produce water according to the following equation. How much water is produced?

2H₂ + O₂ → 2H₂O

4.0 g

5.0 g

5.6 g

9.0 g

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

59. Consider the following chemical equation. Which substance is oxidized?

BaCl₂ (aq) + H₂SO₄ (aq) → BaSO₄ (s) + 2HCl (aq)

Ba²⁺

Cl^– and H⁺

SO₄^2-

none of them

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

60. The reaction 2KBr + F₂ → 2KF + Br₂ is an example of a _____ reaction.

	a.	spectator	b.	metaphysical
	c.	single replacement	d.	double replacement

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

61. Which of the following phrases can be used to describe the process of reduction?

	a.	to gain oxygen	b.	to combine with hydrogen
	c.	to gain electrons	d.	to decrease in oxidation number

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

62. Lycopene, a phytonutrient, has several potential health benefits, including protection against prostate, cervical and pancreatic cancer. Which of the following is a good source of this substance?

spinach

broccoli

strawberries

tomatoes

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

63. Air bags serve an important role in providing driver and front-seat passenger protection in the event of an automobile accident. They rely on several chemical reactions. Which of the following chemicals is responsible for N₂ production?

	a.	sodium azide	b.	potassium nitrate
	c.	silicon dioxide	d.	more than one answer is correct.

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

64. The reaction Mg + 3N₂ → Mg₃N₂ is correctly balanced as written.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

65. The reaction Ca + Cl₂ → CaCl₂ is a redox reaction.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

66. Redox reactions may also be a decomposition reaction.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

67. The oxidation number of iodine in HIO₄ is +6.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

68. In the reaction Zn + Cu(NO₃)₂ → Cu + Zn(NO₃), the Zn is reduced.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

69. In the reaction CuCl₂ + Fe → Cu + FeCl₂ the CuCl₂ is the oxidizing agent.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

70. The reaction AgNO₃ + HCl → AgCl + HNO₃ is a redox reaction.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

71. In an exothermic reaction, heat is liberated to the surroundings.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

72. All redox reactions are exothermic reactions.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

73. The net ionic equation for the reaction H₂SO₄ + NaOH → Na₂SO₄ + H₂O is
H⁺ + OH → H₂O.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

74. 2CO + O₂ → 2CO₂

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

75. Products are always on the right side of a chemical equation.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

76. In ionic compounds, metals have a positive oxidation number.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

77. The reducing agent is the substance that is reduced in the reaction.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

78. Some redox reactions involve only oxidation without any reduction.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

79. A net ionic equation may include one or more spectator ions.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

80. The reactions NaOH + HCl → H₂O + NaCl and Ca(OH)₂ + 2HBr → 2H₂O + CaBr₂ have the same net ionic equation.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

81. Most reactions give a percent yield of almost 100%.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

82. Water is a product when any inorganic acid reacts with any inorganic base.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

83. The batteries in an automobile contain lead plates, water, PbSO₄ and H₂SO₄. The instructions with a battery charger state that when a car battery is being charged, there must be no flames or sparks. Hydrogen is liberated during the process and might explode on ignition. Therefore, the hydrogen released is an indication that a redox reaction occurs during the charging process.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

84. All redox reactions involve oxygen.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

85. The oxidation number of cesium (Cs) is always +1.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

86. The oxidation number of Cr in K₂CrO₄ is +6.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

87. Integers are used in properly balanced chemical equations because whole moles of substances are needed for a reaction.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

88. In the real world, one should not expect to obtain as much product as can be predicted from the stoichiometric calculation.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

89. While antiseptics and disinfectants are both antibacterials, only an antiseptic should be used on living tissue.

	a.	True
	b.	False

ANSWER:	True
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

90. The ultimate source of all energy used by animals is the carbohydrates found in plants.

	a.	True
	b.	False

ANSWER:	False
POINTS:	1
QUESTION TYPE:	True / False
HAS VARIABLES:	False
DATE CREATED:	3/4/2016 3:38 PM
DATE MODIFIED:	3/4/2016 3:38 PM

91. What is the oxidation number of an uncombined element?

	a.	+1
	b.	−1
	c.	0
	d.	−2

ANSWER:	c
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	10/21/2016 1:26 AM
DATE MODIFIED:	10/21/2016 1:27 AM

92. What is the sum of the oxidation numbers of all the atoms in the compound formula K₂CO₃?

	a.	−2
	b.	0
	c.	−1
	d.	+1

ANSWER:	b
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	10/21/2016 1:28 AM
DATE MODIFIED:	10/21/2016 1:31 AM

93. What will be the sum of the oxidation numbers of all the atoms in the polyatomic ion HPO₄²⁻?

	a.	0
	b.	−2
	c.	−1
	d.	+1

ANSWER:	b
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	10/21/2016 1:31 AM
DATE MODIFIED:	10/21/2016 1:32 AM

94. Which of the following equations represents a nonredox combination reaction?

	a.
	b.
	c.
	d.

ANSWER:	d
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	10/21/2016 1:33 AM
DATE MODIFIED:	10/21/2016 1:40 AM

95. Identify a true statement of double-replacement reaction.

	a.	It is a chemical reaction in which two compounds react and exchange partners to form two new compounds.
	b.	It is a chemical reaction in which two compounds react and exchange partners to form two new compounds.
	c.	It is a chemical reaction in which a single substance reacts to form two or more simpler substances.
	d.	It is a chemical reaction in which two or more substances react to form a single substance.

ANSWER:	a
POINTS:	1
QUESTION TYPE:	Multiple Choice
HAS VARIABLES:	False
DATE CREATED:	10/21/2016 1:45 AM
DATE MODIFIED:	10/21/2016 1:47 AM

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Chemistry for Today General, Organic, and Biochemistry 9th Edition By Spencer L. Seager - Test Bank

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