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The standard EMF for the given cell reaction `Zn + Cu^(2+) rarr Cu + Zn^(2+)` is `1.10 V` at `25^(@)C`. The EMF for the cell reaction, when `0.1 M Cu^(2+)` and `0.1 M Zn^(2+)` solutions are used, at `25^(@)C` is -A. `1.10 V`B. `0.110 V`C. `-1.10 V`D. `-0.110 V` |
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Answer» Correct Answer - A `E_("cell") = E_("cell")^(@)-(0.059)/(2) "log" ([Zn^(+2)])/([Cu^(+2)])` `= 1.10 - (0.059)/(2)"log"(0.1)/(0.1)` `= 1.10 V` |
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