1.

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 -

Answer»

`1.10 V`
`0.110 V`
`-1.10 V`
`-0.110 V`

SOLUTION :`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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