An ideal gas occupying a volume of 2 dm3 and a pressure of 5 bar undergoes isothermal and irreversible expansion against external pressure of 1 bar. The final volume of the system and the work involved in the process is
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a
10 dm3, 1000 J
b
8 dm3, –800 J
c
10 dm3, –800 J
d
10 m3, –1000 J
answer is C.
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Detailed Solution
W = - PΔV = -1(10-2) = - 8 lit- bar = - 8x100 = -800 J
An ideal gas occupying a volume of 2 dm3 and a pressure of 5 bar undergoes isothermal and irreversible expansion against external pressure of 1 bar. The final volume of the system and the work involved in the process is