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The EMF of a cell corresponding to the r...

The EMF of a cell corresponding to the reaction : `Zn_((s)) + 2H_((aq))^(+) toZn^(2+) (0.1 M) + H_(2(g)) ` ( 1 atm ) is 0.28 volt at `15^@C`.
The pH of the solution at the hydrogen electrode is (Given : `E_(Zn^(2+)//Zn)^@`=-0.76 volt , `E_(H^+ // H_2)^@`= 0 volt )

A

`2.30`

B

`7.8`

C

`9.2`

D

`8.30`

Text Solution

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The correct Answer is:
D
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