Q.

Ecello of the reaction is Zn(s)+Cu2+(aq)→Zn2+aq+Cu(s);If EZn2+/Zno=-0.76,ECu2+/Cuo=0.34V

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a

0.34 V

b

-0.76 V

c

+1.10 V

d

-1.10 V

answer is C.

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Detailed Solution

For the given reaction,Ecello=ECu2+/Cuo-EZn2+/Zno         =0.34--0.76=+1.10V
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Ecello of the reaction is Zn(s)+Cu2+(aq)→Zn2+aq+Cu(s);If EZn2+/Zno=-0.76,ECu2+/Cuo=0.34V