Substance X has a heat of vaporization of 55.4 kJ/mol at its normal boiling point (423°C) . For the process X(l) → X(g) at 1 atm and 423°C, calculate the value of:
-ΔS_univ

Name: Substance X has a heat of vaporization of 55.4 kJ/mol at its normal boiling point (423°C). For the process X(l) → X(g) at 1 atm and 423°C, calculate the value of: -ΔS univ
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Question

Substance X has a heat of vaporization of 55.4 kJ/mol at its normal boiling point (423°C). For the process X(l) → X(g) at 1 atm and 423°C, calculate the value of: -ΔS_univ

Quizplus · Accepted Answer

At the boiling point, the system is at equilibrium, so the entropy change of the universe (ΔSuniv) is zero.

Substance X Has a Heat of Vaporization of 55