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Question

One mole of an ideal gas is heated at constant pressure of 1 atm from 0oC to 100oC . Work done by the gas is

A
8.31 ×103J
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B
8.31 ×103J
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C
8.31 ×102J
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D
8.31 ×102J
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Solution

The correct option is D 8.31 ×102J
Given,
n=1
T1=00C=273K
T2=1000C=373K
P=1atm
From ideal gas equation,
PV=nRT
Differentiate both side,
PΔV=nRΔT
Work done, W=PΔV=nR(T1T2)
W=1×8.31×(273373)
W=831J=8.31×102J
The correct option is D.


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