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Mechanical Properties Of Fluids

Question
CBSEENPH11019685

Derive the expression for the work done by the gas during isobaric expansion.

Solution
Work done by or on the system is given by, 
                straight W equals integral subscript straight V subscript 1 end subscript superscript straight V subscript 2 end superscript PdV               ...(1) 
We have, P is constant.
Therefore, 
straight W equals straight P integral subscript straight V subscript 1 end subscript superscript straight V subscript 2 end superscript dV
space space space space equals space straight P left parenthesis straight V subscript 2 minus straight V subscript 1 right parenthesis space
W the work done when the gas is expanded isobarically.