InterviewSolution
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InterviewSolution
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`Cu^(2+)(aq.)` is unstable in solution and under goes simultaneous oxidation and reduction according to the reaction `2Cu^(+)(aq.)hArr Cu^(2+)(aq.)+Cu(s)` Choose the correct `E^(@)` for the above reaction if `E_(Cu^(2+))^(@)//Cu = 0.34 V and E_(Cu^(2+))^(@)//Cu^(+) = 0.15 V`A. `+0.49V`B. `+0.38V`C. `-0.19V`D. `-0.38V` |
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Answer» Correct Answer - B See A-Level information `E_(Cu^(+)//Cu)^(@)=2E_(Cu^(2+)Cu^(2+)//Cu)-E_(Cu^(2+)//C u)=2xx0.337V-0.153V` `=0.674V-0.153V=0.521V` |
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