Question

2 mole of an ideal gas is expanded from (2 bar, 1L) to 1 bar isothermally. Calculate magnitude of minimum possible work in the change ( in Joules). (1 bar =100 J)
[Given: 1 bar L=100 J]

Answer 1

[0100]
`W-P(V_(2)-V_(1))=P_(2)xxnRT((1)/(P_(2))-(1)/(P_(1)))`
` or , W=-1xxP_(1)V_(1)((1)/(1)-(1)/(2))=-2xx1((1)/(2))=-1 "bar L"=-100J`