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Write cell reaction of the following cel...

Write cell reaction of the following cells:
(a). `Pt|Fe^(2+),Fe^(3+)||MnO_(4)^(-),Mn^(2+),H^(+)|Pt`
(b). `Pt,Cl_(2)|Cl^(-)(aq)||Ag^(+)(aq)|Ag`

A

will increase in all the three cases

B

will decrease in all the three cases

C

will increase in case (1) and (3) but decrease in case (2)

D

will decrease in case (1) and (3) but increase in case (2).

Text Solution

Verified by Experts

The correct Answer is:
c
Reduction potential in three cases are as follows:
(A) `H^(+)+e^(-)rarr(1)/(2)H_(2)`
On increasing `[H^(+)]E_(2)H+H_(2)` will increase
`(1)/(2)Cl_(2)+2e^(-)rarrCl^(-)`
On increasing `[Cl_(4)^(-)],E_(Cl_(2)//Ag)` will increase.
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