A galvanic cell consists of one half-cell that contains Ag(s) and Ag+(aq), and o

Question

A galvanic cell consists of one half-cell that contains Ag(s) and Ag+(aq), and one half-cell that contains Cu(s) and Cu2+(aq). What species are produced at the electrodes under standard conditions? Ag+(aq) + e- Ag(s) E° = +0.80 V Cu2+(aq) + 2 e- Cu(s) E° = +0.34 V

Answers:

A galvanic cell consists of one half-cell that contains Ag(s) and Ag+(aq), and one half-cell that contains Cu(s) and Cu2+(aq). What species are produced at the electrodes under standard conditions?
Ag+(aq) + e- Ag(s) E° = +0.80 V
Cu2+(aq) + 2 e- Cu(s) E° = +0.34 V

A) Ag(s) is formed at the cathode, and Cu2+(aq) is formed at the anode. B) Cu2+(aq) is formed at the cathode, and Cu(s) is formed at the anode. C) Ag(aq) is formed at the cathode and, Cu(s) is formed at the anode. D) Cu(s) is formed at the cathode, and Ag+(aq) is formed at the anode.

Explanation / Answer

2Ag+(aq) + 2e- --> 2Ag(s) (red.)E° = +0.80 V
Cu(s)--->Cu2+(aq) + 2e- (ox.) E° = -0.34 V

so,net reaction -

2Ag+ +Cu==>2Ag +Cu2+  

Anode= site of oxidation

Cathode = site of reduction

ans- Ag(s) is formed at the cathode, and Cu2+(aq) is formed at the anode

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