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I(2)(s)|I^(-)(0.1M) half cell is connect...

`I_(2)(s)|I^(-)`(0.1M) half cell is connected to a `H^(+)` (aq)|`H_(2)`(1 bar)|Pt half celland e.m.f. is found to be 0.7714 V. If `E_(I_(2)|I^(-))^(@)`=0.535 V, find the pH of `H^(+)|H_(2)` half cell.

A

1

B

3

C

5

D

7

Text Solution

Verified by Experts

The correct Answer is:
B
The cell reaction is
`H_(2)(g)+I_(2)(s)hArr2H^(+)(aq)+2I^(+)(aq)`
`0.7714-0.535-(0.0591)/2 "log" ([H^(+)]^(2)[I^(-)]^(2))/P_(H_(2)),pH=3`
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