The standard oxidation potential E0 for the half cell reaction areFe→Fe2++2e−; E∘=+0.41VCu→Cu2++2e−; E∘=−0.34VEMF of the cell reaction isFe(s)+Cu2+(aq)→Fe2+(aq)+Cu(s)
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a
0.75 V
b
-0.75 V
c
0.07 V
d
- 0.07 V
answer is A.
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Detailed Solution
Ecell =Ecathode0 −Eanode0 = 0.34 – (– 0.41)= 0.75 V
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The standard oxidation potential E0 for the half cell reaction areFe→Fe2++2e−; E∘=+0.41VCu→Cu2++2e−; E∘=−0.34VEMF of the cell reaction isFe(s)+Cu2+(aq)→Fe2+(aq)+Cu(s)