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(a) Show that the entropy change of a Van der Waals gas for an isothermal change...

(a) Show that the entropy change of a Van der Waals gas for an isothermal change V1 to V2 is: ΔS = nR ln (V2 - nb / V1 - nb) (b) Calculate ΔS for expanding on mole of NH3 from 2 dm3 to 20 dm3. Compare this to the ideal gas result. b = 0.0371 dm3/mol

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Answer #1

for iso thermal condition otso on dio do = dg + dw (first law of thermodynators) da do du= cudT dw = - pdv (Heat capacity atn=1 no. of mole of gas. Vi : 2L 202 b = 0.0371 L/mol Os = x 8.314 J K mot en/20 - 0.0 371x1) 2 -0.0371 XL - 8.314 in (19.9629

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Answer #2
Derive an expression for change in entropy of a gas obeying Vander Waals equation of state
source: B.tech
answered by: Rajveer
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