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A galvanic cell is compsed of two hydrog...

A galvanic cell is compsed of two hydrogen electrodes, one of which is a standard one. In which of the following solutions should the other electrode be immersed to get maximum emf?
`K_(a)(CH_(3)COOH) = 2 xx 10^(-5)` ,`K_(a)(H_(3)PO_(4)) = 10^(-3)`.

A

`0.1` M HCl

B

`0.1` M `CH_(3)COOH`

C

`0.21"M H"_(2)SO_(4)`

D

`0.1"M H"_(3)PO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
B
`E^(@)=(0.059)/(n)log.(C_(1))/(C_(2))`
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