Question

A piston containing 0.75 moles of a perfect gas at 25 degrees C is moved isothermally from a starting volume of 8.305 L.

Calculate the work in joules if the piston is moved irreversibly against a constant external pressure of 4.100 atm. We weren't giving final volume so I am unsure of what to do. I tried to use P1V1 = P2V2 because the final pressure is equal to external pressure in an irreversible process. But then my final volume decreases when it's supposed to be expanding.Use this information to answer the following: A piston containing 0.75 moles of a perfect gas at 25.00 °C is moved isothermal

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Answer #1

Giver, n=0.75 mol T= 25°c = 298k V = 8.305L PV=nRT & P = ART = 0.75*0.0821 x 298 mol Katm motky k 8.305k P = 2.21 atm P2 = P= +15. 70 115 Latm (:1 Latm= 101.3255) [Wise + 1590.925] Compression taking place Work is being done on the system W= tve # f

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