Chemistry - Thermodynamics - II Question with Solution | TestHub
ChemistryThermodynamics - IIFree Energy and EquilibriumMedium2 minQB
ChemistryMediumsingle choice
An amount of 2 moles of H₂O(l) at 100°C and 1 atm is converted into H₂O(g) at 100°C and 2 atm. ΔG for the process is
Options:
Answer:
C
Solution:
Split into: (i) vaporisation at 100°C, 1 atm — phase equilibrium, ΔG = 0; (ii) isothermal compression of the vapour from 1 to 2 atm: ΔG = nRT ln(P₂/P₁) = 2 × 2 × 373 × ln 2 = 1492 ln 2 cal (R = 2 cal/K-mol). Matches (c).
Stream:JEESubject:ChemistryTopic:Thermodynamics - IISubtopic:Free Energy and Equilibrium
⏱ 2mℹ️ Source: QB
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