Question No. 196 The Eº for half cells Fe/Fe+2 and Cu/Cu+2 are -0.44V and +0.32V respectively then (A) Cu +2 oxidizes Fe (B) Cu+2 oxidizes Fe+2 (C) Cu oxidizes Fe+2 (D) Cu reduces Fe+2
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Explanation:
The standard reduction potential of Fe
2+
/Fe is less than that of Cu
2+
/Cu hence Fe is more electropositive than copper. Hence, Cu^{2+} can oxidize Fe.
Answer:
B) Cu+2 oxidizes Fe to Fe+2
It is due -ve electrode potential of Fe and reducing nature of Fe.
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