Question

1. Calculate q, w, ∆U and ∆H if 1.65 mol of an ideal gas with Cv = R 3/2 undergoes a reversible adiabatic expansion from an initial volume Vi = 7.75 m3 to a final volume Vf = 20.5 m3 . The initial temperature is 300 K.

2. 2.25 moles of an ideal gas at 35.6oC expands isothermally from an initial volume of 26.0 dm3 to a final volume of 70.0 dm3 . Calculate w for this process (a) for expansion against a constant external pressure of 1.00 x 105 Pa and (b) for a reversible expansion. 

Answer 1

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