A voltaic cell consists of a Zn/Zn2+Zn/Zn2+ half-cell and a Ni/Ni2+Ni/Ni2+ half-cell at 25 ∘C∘C. The initial concentrations of Ni2+Ni2+ and Zn2+Zn2+ are 1.30 molL−1molL−1 and 0.110 molL−1molL−1, respectively. Zn2+(aq)+2e−→Zn(s)E∘=−0.76VZn2+(aq)+2e−→Zn(s)E∘=−0.76V Ni2+(aq)+2e−→Ni(s)E∘=−0.23V What is the initial cell potential? and units What is the cell potential when the concentration of Ni2+Ni2+ has fallen to 0.600 molL−1molL−1? and units What are the concentrations of Ni2+Ni2+ and Zn2+Zn2+ when the cell potential falls to 0.46 VV? and units
A voltaic cell consists of a Zn/Zn2+Zn/Zn2+ half-cell and a Ni/Ni2+Ni/Ni2+ half-cell at 25 ∘C∘C. The initial concentrations of Ni2+Ni2+ and Zn2+Zn2+ are 1.30 molL−1molL−1 and 0.110 molL−1molL−1, respectively. Zn2+(aq)+2e−→Zn(s)E∘=−0.76VZn2+(aq)+2e−→Zn(s)E∘=−0.76V Ni2+(aq)+2e−→Ni(s)E∘=−0.23V What is the initial cell potential? and units What is the cell potential when the concentration of Ni2+Ni2+ has fallen to 0.600 molL−1molL−1? and units What are the concentrations of Ni2+Ni2+ and Zn2+Zn2+ when the cell potential falls to 0.46 VV? and units
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter17: Electrochemistry And Its Applications
Section: Chapter Questions
Problem 105QRT
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A voltaic cell consists of a Zn/Zn2+Zn/Zn2+ half-cell and a Ni/Ni2+Ni/Ni2+ half-cell at 25 ∘C∘C. The initial concentrations of Ni2+Ni2+ and Zn2+Zn2+ are 1.30 molL−1molL−1 and 0.110 molL−1molL−1, respectively.
Zn2+(aq)+2e−→Zn(s)E∘=−0.76VZn2+(aq)+2e−→Zn(s)E∘=−0.76V
Ni2+(aq)+2e−→Ni(s)E∘=−0.23V
What is the initial cell potential? and units
What is the cell potential when the concentration of Ni2+Ni2+ has fallen to 0.600 molL−1molL−1? and units
What are the concentrations of Ni2+Ni2+ and Zn2+Zn2+ when the cell potential falls to 0.46 VV? and units
Transcribed Image Text:A voltaic cell consists of a Zn/Zn²+ half-cell and a
Ni/Ni?+ half-cell at 25 ° C. The initial
concentrations of Ni2+ and Zn²+ are 1.30
mol L- and 0.110 mol L-, respectively.
Zn2+ (aq) + 2 e → Zn(s)
Ni?+ (aq) + 2 e → Ni(s)
E° = -0.76 V
E°
-0.23 V
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