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What is cell entropy change of the follo...

What is cell entropy change of the following cell ?
`Pt(s)|H_(2)(g)|CH_(3)COOH,HCl||KCl(aq)|Hg_(2)Cl_(2)(s)|Hg`
`P=1atm" "0.1M" "0.1M`
Emf of the cell is found to be `0.045 V` at `298 K` and temperature coefficient is `3.4xx10^(-4)V K^(-1)`
Given `K_(a(CH_(3)COOH))=10^(-5)M`

A

60

B

65.2

C

69.2

D

63.5

Text Solution

Verified by Experts

The correct Answer is:
B
Considering the cell reaction
`H_(2)+2eto2H^(+)`
`Hg_(2)^(2+)+2eto2Hg(l)+2Cl^(-)(aq)`
`triangleS=nF((delE)/(delT))_(P)=2xx96500xx3.4xx10^(-4)=65.223J//K//"mole"`
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