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Question

Chemistry Question on Galvanic Cells

Reaction that takes place at graphite anode in drycell is

A

Zn2++2e−\ce−>Zn(s)Zn^{2+}+ 2e^- \ce{->}Zn(s)

B

Zn(s)\ce−>Zn2++2e−Zn (s)\ce{->} Zn^{2+} + 2 e^-

C

Mn2++2e−\ce−>Mn(s)Mn^{2+} + 2e^- \ce{->} Mn (s)

D

Mn(s)\ce−>Mn++e−+1.5Mn (s)\ce{->} Mn^+ + e^ - + 1.5 V

Answer

Zn(s)\ce−>Zn2++2e−Zn (s)\ce{->} Zn^{2+} + 2 e^-

Explanation

Solution

The reaction which occurs at anode is Zn(s)−>Zn2+(aq)+2e−Zn(s) {->} Zn^{2+} (aq) + 2e^-