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Two litres of a gas undergoes isothermal reversible expansion to 10 L where pressure is 1 atm. The heat absorbed by system is 

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a
1.61 L-atm
b
16.1 L-atm
c
161.0 L-atm
d
.0.161 L-atm

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detailed solution

Correct option is B

∆U=0 Heat absorbed=-w(work done by a system) =2.303 PfVflogV2V1 =2.303×1×10 log102 =2.303×10×log 5 =2.303×10×0.699=16.1 L-atm

ctaimg

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