Chapter 18 Electrochemistry

Chapter 18 Electrochemistry

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

Multiple Choice Questions

1. A balanced redox equation must have which of the following:
   I. The same number of each type of atom on both sides of the equation
   II. The total number electrons lost in the oxidation equal to total number of electrons gained in the reduction
   III. The same total charge of all ionic species on both sides of the reaction
   IV. H₂O present as a product or a reactant
   A.I, II, and III
   B. I and II
   C. I, III, and IV
   D. I, II, III, and IV
   E. III and IV

Bloom’s Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 18.01
Subtopic: Oxidation-Reduction (REDOX) Reactions (Definition and Balancing)
Topic: Electrochemistry

What is the total number of moles (n) of electrons exchanged between the oxidizing agent and the reducing agent in the overall redox equation:
5 Ag⁺(aq) + Mn²⁺(aq) + 4H₂O(l) ® 5Ag(s) + MnO₄^–(aq) + 8H⁺(aq)

1. 1
   B. 2
   C. 3
   D. 5
   E. 7

Bloom’s Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 18.01
Subtopic: Oxidation-Reduction (REDOX) Reactions (Definition and Balancing)
Topic: Electrochemistry

What is the total number of moles (n) of electrons exchanged between the oxidizing agent and the reducing agent in the overall redox equation:
Cr₂O₇^2-(aq) + 6Fe²⁺(aq) + 14H⁺(aq) ® 2Cr³⁺(aq) + 6Fe³⁺(aq) + 7H₂O(l)

1. 1
   B. 2
   C. 3
   D. 6
   E. 12

Bloom’s Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 18.01
Subtopic: Oxidation-Reduction (REDOX) Reactions (Definition and Balancing)
Topic: Electrochemistry

Complete and balance the following redox equation. When properly balanced using the smallest whole-number coefficients, the coefficient of S is
H₂S + HNO₃ ® S + NO (acidic solution)

1. 1.
   B. 2.
   C. 3.
   D. 5.
   E. 6.

Bloom’s Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 18.01
Subtopic: Oxidation-Reduction (REDOX) Reactions (Definition and Balancing)
Topic: Electrochemistry

Complete and balance the following redox equation using the smallest whole-number coefficients. What is the coefficient of Sn in the balanced equation?
Sn + HNO₃ ® SnO₂ + NO₂ + H₂O (acidic solution)

1. 1
   B. 2
   C. 3
   D. 4
   E. 5

Bloom’s Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 18.01
Subtopic: Oxidation-Reduction (REDOX) Reactions (Definition and Balancing)
Topic: Electrochemistry