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Question

Given:
Pt (s) | Cl(C1) | Cl2(g)(P1 atm) || Cl2(g)(P1 atm)| Cl(C2)| Pt (s)
Identify in which of the following condition working of cell takes place:

A
C1 > C2 and P1 = P2
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B
P2 > P1 and C1 = C2
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C
C1 < C2 and P1 = P2
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D
P2 < P1 and C1 = C2
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Solution

The correct options are
A C1 > C2 and P1 = P2
B P2 > P1 and C1 = C2
2Cl(C1M) Cl2P1 atm+ 2eCl2P2 atm+ 2e 2Cl(C2 M)
On adding above 2 equations we get,
2Cl(C1M)+ Cl2P2atm Cl2P1atm+ 2 Cl(C2M)
Ecell = E°cell0.05912logP1×C22P2×C21
As this is the concentration cell so E°Cell=0
ECell = 0.05912logP1×C22P2×C12
To make the reaction spontaneous ECell > 0
So, option (a) and (b) are correct


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