Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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 A voltaic cell employs the following redox reaction:

PbO2 (s) + NO (g) → Pb2+ (aq) + NO3 (aq

a) Balance the above reaction in acidic solution.

b) Draw a diagram of the voltaic cell. Label the PbO2, NO, Pb2+, and NO3. Indicate the direction of electron flow and the direction of anion and cation flow from the salt bridge.

c) The PbO2/ Pb2+ half-reaction has a standard reduction potential (E°) of 1.46 V and the NO3-/ NO half-reaction has a standard reduction potential (E°) of 0.96 V. Calculate the potential of the cell at 25 °C under the following conditions:

PNO

0.950 atm

[Pb2+]

0.0500 M

[NO3]

0.0620 M

pH

4.67

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