[Review Topics] [References) Use the References to access important values if needed for this question. Use standard reduction potentials to calculate the standard free energy change in kJ for the reaction: I2(s) + 2Cu*(aq)–→21(aq) + 2Cu²*(ag) Answer: kJ K for this reaction would be than one. Submit Answer Retry Entire Group 9 more group attempts remaining

Chemistry
9th Edition
ISBN:9781133611097
Author:Steven S. Zumdahl
Publisher:Steven S. Zumdahl
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 66E
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[Review Topics]
[References)
Use the References to access important values if needed for this question.
Use standard reduction potentials to calculate the standard free energy change in kJ for the reaction:
I2(s) + 2Cu*(aq)–→21(aq) + 2Cu²*(ag)
Answer:
kJ
K for this reaction would be
than one.
Submit Answer
Retry Entire Group
9 more group attempts remaining
Transcribed Image Text:[Review Topics] [References) Use the References to access important values if needed for this question. Use standard reduction potentials to calculate the standard free energy change in kJ for the reaction: I2(s) + 2Cu*(aq)–→21(aq) + 2Cu²*(ag) Answer: kJ K for this reaction would be than one. Submit Answer Retry Entire Group 9 more group attempts remaining
Expert Solution
Introduction

Chemistry homework question answer, step 1, image 1

Calculations

The given reaction is as follows:

Chemistry homework question answer, step 2, image 1

For the given reaction, the half-reduction reaction (at cathode) can be written as follows:

Chemistry homework question answer, step 2, image 2

The standard reduction potential for the above reaction is 0.536 V.

The half-reduction reaction (at cathode) can be written as follows:

Chemistry homework question answer, step 2, image 3

The standard reduction potential for the above reaction is 0.159 V.

Chemistry homework question answer, step 2, image 4

Now, substitute the values in the expression (I).

Chemistry homework question answer, step 2, image 5

The standard free energy is calculated by using the relation shown below.

Chemistry homework question answer, step 2, image 6

Here,

The number of electrons transfer in the reaction is “n”.

The Faraday’s constant is “F” (96500 C/mol).

Chemistry homework question answer, step 2, image 7

Chemistry homework question answer, step 2, image 8

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