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Question

Pt|H2(p1)H+(1M)H+(1M)H2(p2)|Pt (where p1 and p2 are pressure) cell reaction will be spontaneous if:

A
p1=p2
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B
p1>p2
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C
p2>p1
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D
p1=1atm
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Solution

The correct option is B p1>p2
Pt|H2(P1)|H+(1m)H+(1M)H2(P2)/Pt
Ecell=0.0592log(PanodePcathode)
Ecell=0.0592log(P1P2)
for Ecell>0,log(P1P2)>0
P1>P2

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