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Consider the cell : Pt|H(2)(p(1)atm)|H...

Consider the cell `:`
`Pt|H_(2)(p_(1)atm)|H^(o+)(x_(1)M) || H^(o+)(x_(2)M)|H_(2)(p_(2)atm)Pt`.
The cell reaction be spontaneous if

A

`p_(1)=p_(2)` and `x_(1) lt x_(2)`

B

`p_(1)=p_(2)` and `x_(1) lt x_(2)`

C

`x_(1)=x_(2)` and `p_(1) gt p_(2)`

D

`x_(1)=x_(2)` and `p_(1)ltp_(2)`

Text Solution

Verified by Experts

The correct Answer is:
b,c
`E_(red)=-0.059[pH+(logpH_(2))/(2)]`
`implies E_(cell)=0.059[pH_(a)-pH_(c)+(1)/(2)log.((pH_(2))_(a))/((pH_(2))_(c))]V`
`E_(cell)gt0`, when `p_(1)=p_(2)` and `x_(1)ltx_(2)`
or when `x_(1)=x_(2)` and `p_(1)gtp_(2)`
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