Half-ReactionStandard Reduction Potential, E (V)Ag+ (ag) + e- –→ Ag(s)+0.80Au+(ag) + 3 e- → Au(s)+1.50Two different electrolytic cells are constructed to electroplate two identical objects based on the half-reactions given in the table above. An object will be plated with a certain number of moles of Auin one cell, and in the other cell another object will be plated with the same number of moles of Ag in the same amount of time. Which of the following mathematical relationships can be used todetermine how much more current is needed to electroplate an object with Au than to electroplate it with Ag?AThe difference in standard reduction potential of Au+ and Ag is 0.70 V.BThree times more electrons are needed to reduce Au (ag) to Au(s) than are needed to reduce Ag (ag) to Ag(s)AGʻ is more negative for the reduction of Au**(ag) to Au(s) than for the reduction of Ag¯(aq) to Ag(s).The molar-mass ratio of Aul is 196.97107.87Ag Ni+ (ag) + Cd(s) → Ni(s) + Cd²+ (aq)E cell = +0.15 VUnder standard conditions, a Ni-Cd galvanic cell generates a potential of +0.15 V using the chemical reaction represented above. Which of the following best explains how [Ni+] > 1 M affectsthe cell potential if this is the only change made to the operation of the galvanic cell?is smaller if [Ni+1 >1 M, resulting in Q < 1 and Eu> Ecel|N1The ratioCa*]is smaller if (Ni?+] >1 M, resulting in Q > l and E > EBThe ratioNis larger if (Ni+] >1 M, resulting in Q > 1 and Ecell < E° cel:The ratio(Nis larger if [Ni+] >1 M, resulting in Q < 1 and E[Ca*]E cellDThe ratio

Answered: Image /qna-images/answer/d03ce501-7f61-463a-9ab5-4636e425a5fe.jpg

Ni+ (ag) + Cd(s) → Ni(s) + Cd²+ (aq) E¨ cell = +0.15 V Under standard conditions, a Ni-Cd galvanic cell generates a potential of +0.15 V using the chemical reaction represented above. Which of the following best explains how Ni+] >1 M affects the cell potential if this is the only change made to the operation of the galvanic cell? The ratio is smaller if (Ni+1>1 M, resulting in Q < 1 and Ecell > E¨ cœl- A Ca is smaller if (Ni+] > 1 M, resulting in Q > 1 and Ecell > E¨ cell B The ratio NP The ratio N Ca is larger if Ni+] >1 M, resulting in Q > 1 and E 1 M, resulting in Q < 1 and Ecel < E°cetl The ratio

Ni+ (ag) + Cd(s) → Ni(s) + Cd²+ (aq) E¨ cell = +0.15 V Under standard conditions, a Ni-Cd galvanic cell generates a potential of +0.15 V using the chemical reaction represented above. Which of the following best explains how Ni+] >1 M affects the cell potential if this is the only change made to the operation of the galvanic cell? The ratio is smaller if (Ni+1>1 M, resulting in Q < 1 and Ecell > E¨ cœl- A Ca is smaller if (Ni+] > 1 M, resulting in Q > 1 and Ecell > E¨ cell B The ratio NP The ratio N Ca is larger if Ni+] >1 M, resulting in Q > 1 and E 1 M, resulting in Q < 1 and Ecel < E°cetl The ratio

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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