A voltaic cell is set up at 25 °C and delivers 0.37 V. One half cell contains an acidified solution of dichromate and chromium(III) ions, and the other half-cell is based on the following reaction: 3.2 NO (aq) + 3H30*(aq) + 2e¯ → HNO2(aq) + 4H20 (?), Efed = 0.94 V 3.2.1 Write down the fully balanced cell-reaction equation. [Cr3+12 [Cr,0? ] 3.2.2 What must the value of the ratio be if [NO3] = 0.09 M, [HNO2 ] = 0.15 M and the pH = 0.60?
A voltaic cell is set up at 25 °C and delivers 0.37 V. One half cell contains an acidified solution of dichromate and chromium(III) ions, and the other half-cell is based on the following reaction: 3.2 NO (aq) + 3H30*(aq) + 2e¯ → HNO2(aq) + 4H20 (?), Efed = 0.94 V 3.2.1 Write down the fully balanced cell-reaction equation. [Cr3+12 [Cr,0? ] 3.2.2 What must the value of the ratio be if [NO3] = 0.09 M, [HNO2 ] = 0.15 M and the pH = 0.60?
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter19: Principles Of Chemical Reactivity: Electron Transfer Reactions
Section: Chapter Questions
Problem 94GQ: A voltaic cell is constructed in which one half-cell consists of a silver wire in an aqueous...
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![A voltaic cell is set up at 25 °C and delivers 0.37 V. One half cell contains an acidified solution
of dichromate and chromium(III) ions, and the other half-cell is based on the following
reaction:
3.2
NO (aq) + 3H30*(aq) + 2e¯ → HNO2(aq) + 4H20 (?), Efed
= 0.94 V
3.2.1
Write down the fully balanced cell-reaction equation.
[Cr3+12
[Cr,03 ]
3.2.2
What must the value of the ratio
be if [NO3] = 0.09 M, [HNO2 ] = 0.15 M and the
pH
= 0.60?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F92756ff9-90e2-4c3c-90cf-dce0881ff676%2F835484dc-f557-48ea-a4a7-9c4f5c55d193%2Ffrd7xds_processed.png&w=3840&q=75)
Transcribed Image Text:A voltaic cell is set up at 25 °C and delivers 0.37 V. One half cell contains an acidified solution
of dichromate and chromium(III) ions, and the other half-cell is based on the following
reaction:
3.2
NO (aq) + 3H30*(aq) + 2e¯ → HNO2(aq) + 4H20 (?), Efed
= 0.94 V
3.2.1
Write down the fully balanced cell-reaction equation.
[Cr3+12
[Cr,03 ]
3.2.2
What must the value of the ratio
be if [NO3] = 0.09 M, [HNO2 ] = 0.15 M and the
pH
= 0.60?
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