Chapter 13 Chemical Kinetics

Chapter 13 Chemical Kinetics

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

Multiple Choice Questions

Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation:
2ClO₂(aq) + 2OH^–(aq) ® ClO₂^–(aq) + ClO₃^–(aq) + H₂O(l)
Under a certain set of conditions, the initial rate of disappearance of chlorine dioxide was determined to be 2.30 x 10^–1 M/s. What is the initial rate of appearance of chlorite ion under those same conditions?

5. 5.75 x 10^–2 M/s
   B. 1.15 x 10^–1 M/s
   C. 2.30 x 10^–1 M/s
   D. 4.60 x 10^–1 M/s
   E. 9.20 x 10^–1 M/s

Bloom’s Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 13.01
Subtopic: Reaction Rate and Collision Theory
Topic: Chemical Kinetics (Reaction Rates)

For the reaction BrO₃^– + 5Br^–+ 6H⁺ ® 3Br₂ + 3H₂O at a particular time, –D[BrO₃^–]/Dt = 1.5 ´ 10^–2 M/s. What is –D[Br^–]/Dt at the same instant?

7. 13 M/s
   B. 7.5 ´ 10^–2 M/s
   C. 1.5 ´ 10^–2 M/s
   D. 3.0 ´ 10^–3 M/s
   E. 330 M/s

Bloom’s Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 13.01
Subtopic: Reaction Rate and Collision Theory
Topic: Chemical Kinetics (Reaction Rates)

For the following reaction, DP(C₆H₁₄)/Dt was found to be –6.2 ´ 10^–3 atm/s.
C₆H₁₄(g) ® C₆H₆(g) + 4H₂(g)
Determine DP(H₂)/Dt for this reaction at the same time.

6. 6.2 ´ 10^–3 atm/s
   B. 1.6 ´ 10^–3 atm/s
   C. 2.5 ´ 10^–2 atm/s
   D. –1.6 ´ 10^–3 atm/s
   E. –2.5 ´ 10^–2 atm/s

Bloom’s Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 13.01
Subtopic: Reaction Rate and Collision Theory
Topic: Chemical Kinetics (Reaction Rates)

For the reaction C₆H₁₄(g) ® C₆H₆(g) + 4H₂(g), DP(H₂)/Dt was found to be 2.5 ´ 10^–2 atm/s, where DP(H₂) is the change in pressure of hydrogen. Determine DP(C₆H₁₄)/Dt for this reaction at the same time.

2. 2.5 ´ 10^–2 atm/s
   B. –6.2 ´ 10^–3 atm/s
   C. –2.5 ´ 10^–2 atm/s
   D. 0.10 atm/s
   E. 6.2 ´ 10^–3 atm/s

Bloom’s Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 13.01
Subtopic: Reaction Rate and Collision Theory
Topic: Chemical Kinetics (Reaction Rates)

For the hypothetical reaction A + 3B ® 2C, the rate of appearance of C given by (D[C]/Dt) may also be expressed as

D[C]/Dt = D[A]/Dt

D[C]/Dt = –(3/2) D[B]/Dt

D[C]/Dt = –(2/3) D[B]/Dt

D[C]/Dt = –(1/2) D[A]/Dt

Bloom’s Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 13.01
Subtopic: Reaction Rate and Collision Theory
Topic: Chemical Kinetics (Reaction Rates)