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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,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
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?
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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