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Q.

Calculate ΔH for the isothermal reversible expansion of one   mole of an ideal gas from an initial pressure of 1 bar to a final pressure of 0.1 bar at a constant temperature of 273K.

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Detailed Solution

for isothermal reversible expansion 

W= 2.303 nRT   

W= 2.303 nRT   

W=-5227.2 J

At constant temp,for expansion ΔT=0

Therefore ΔT=0

 ΔV=1×CV×ΔT=0   (n=0)

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