The manganese(II)-catalyzed redox reaction between cerium(IV) and thallium(I) is thought to proceed by a three-step mechanism: Ce4+(aq) + Mn2+(aq) --> Ce3+(aq) + Mn3+(aq) (slow) Ce4+(aq) + Mn3+(aq) --> Ce3+(aq) + Mn4+(aq) Mn4+(aq) + Tl+(aq) --> Mn2+(aq) + Tl3+(aq) (a) If the first step of this mechanism is rate-determining (slow), choose the correct rate law for the overall process. Rate = k [Mn2+] [Mn3+] Rate = k [Ce4+]2 Rate = k [Ce4+] [Tl+] Rate = k [Mn2+] [Ce4+] Rate = k [Ce4+]2 [Tl+] Rate = k [Mn3+] [Tl+] (b) Choose the correct chemical equation for the overall process. Ce4+(aq) + Mn2+(aq) --> Ce3+(aq) + Mn3+(aq) Ce4+(aq) + Mn3+(aq) --> Ce3+(aq) + Mn4+(aq) 2 Ce4+(aq) + Tl+(aq) --> 2 Ce3+(aq) + Tl3+(aq) (c) Identify an intermediate in the reaction. Mn2+ Ce3+ Mn3+ Ce4+ (d) Identify the catalyst in the reaction. Mn2+ Mn3+ Ce3+ Ce4+ (e) Identify a reactant in the reaction. Ce3+ Ce4+ Mn2+ Mn3+ (f) Identify a product in the reaction. Mn3+ Mn2+ Ce4+ Ce3+
The manganese(II)-catalyzed redox reaction between cerium(IV) and thallium(I) is thought to proceed by a three-step mechanism: Ce4+(aq) + Mn2+(aq) --> Ce3+(aq) + Mn3+(aq) (slow) Ce4+(aq) + Mn3+(aq) --> Ce3+(aq) + Mn4+(aq) Mn4+(aq) + Tl+(aq) --> Mn2+(aq) + Tl3+(aq) (a) If the first step of this mechanism is rate-determining (slow), choose the correct rate law for the overall process. Rate = k [Mn2+] [Mn3+] Rate = k [Ce4+]2 Rate = k [Ce4+] [Tl+] Rate = k [Mn2+] [Ce4+] Rate = k [Ce4+]2 [Tl+] Rate = k [Mn3+] [Tl+] (b) Choose the correct chemical equation for the overall process. Ce4+(aq) + Mn2+(aq) --> Ce3+(aq) + Mn3+(aq) Ce4+(aq) + Mn3+(aq) --> Ce3+(aq) + Mn4+(aq) 2 Ce4+(aq) + Tl+(aq) --> 2 Ce3+(aq) + Tl3+(aq) (c) Identify an intermediate in the reaction. Mn2+ Ce3+ Mn3+ Ce4+ (d) Identify the catalyst in the reaction. Mn2+ Mn3+ Ce3+ Ce4+ (e) Identify a reactant in the reaction. Ce3+ Ce4+ Mn2+ Mn3+ (f) Identify a product in the reaction. Mn3+ Mn2+ Ce4+ Ce3+
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The manganese(II)-catalyzed
Ce4+(aq) + Mn2+(aq) --> Ce3+(aq) + Mn3+(aq) (slow)
Ce4+(aq) + Mn3+(aq) --> Ce3+(aq) + Mn4+(aq)
Mn4+(aq) + Tl+(aq) --> Mn2+(aq) + Tl3+(aq)
Ce4+(aq) + Mn3+(aq) --> Ce3+(aq) + Mn4+(aq)
Mn4+(aq) + Tl+(aq) --> Mn2+(aq) + Tl3+(aq)
(a) If the first step of this mechanism is rate-determining (slow), choose the correct rate law for the overall process.
Rate = k [Mn2+] [Mn3+]
Rate = k [Ce4+]2
Rate = k [Ce4+] [Tl+]
Rate = k [Mn2+] [Ce4+]
Rate = k [Ce4+]2 [Tl+]
Rate = k [Mn3+] [Tl+]
(b) Choose the correct chemical equation for the overall process.
Ce4+(aq) + Mn2+(aq) --> Ce3+(aq) + Mn3+(aq)
Ce4+(aq) + Mn3+(aq) --> Ce3+(aq) + Mn4+(aq)
2 Ce4+(aq) + Tl+(aq) --> 2 Ce3+(aq) + Tl3+(aq)
(c) Identify an intermediate in the reaction.
Mn2+
Ce3+
Mn3+
Ce4+
(d) Identify the catalyst in the reaction.
Mn2+
Mn3+
Ce3+
Ce4+
(e) Identify a reactant in the reaction.
Ce3+
Ce4+
Mn2+
Mn3+
(f) Identify a product in the reaction.
Mn3+
Mn2+
Ce4+
Ce3+
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