A voltaic cell is constructed that uses the following reaction and operates at 298 K: Cr 2 O 7 2- (aq) + 14 H + (aq) + 6 I - (aq) → 2Cr 3+ (aq) + 3I 2 (s) + 7 H 2 O (l) (i) Calculate the emf of this cell under standard conditions. [2] (ii) What is the emf of this cell when [Cr 2 O 7 2- ] = 2.00 M, [H + ] = 1.00 M, [I - ] = 1.00 M and [Cr 3+ ] = 1.00 x 10 -5 M
A voltaic cell is constructed that uses the following reaction and operates at 298 K: Cr 2 O 7 2- (aq) + 14 H + (aq) + 6 I - (aq) → 2Cr 3+ (aq) + 3I 2 (s) + 7 H 2 O (l) (i) Calculate the emf of this cell under standard conditions. [2] (ii) What is the emf of this cell when [Cr 2 O 7 2- ] = 2.00 M, [H + ] = 1.00 M, [I - ] = 1.00 M and [Cr 3+ ] = 1.00 x 10 -5 M
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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A voltaic cell is constructed that uses the following reaction and operates at 298 K:
Cr 2 O 7 2- (aq) + 14 H + (aq) + 6 I - (aq) → 2Cr 3+ (aq) + 3I 2 (s) + 7 H 2 O (l)
(i) Calculate the emf of this cell under standard conditions. [2]
(ii) What is the emf of this cell when [Cr 2 O 7 2- ] = 2.00 M, [H + ] = 1.00 M, [I - ] = 1.00 M
and [Cr 3+ ] = 1.00 x 10 -5 M?
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