A container has 0.2 mole of O₂ gas and the gas is heated from 0°C to 100°C. What is the change in entropy of the gas? R = 8.314 J/mol · K.)

Question

Quizplus · Accepted Answer

The change in entropy (ΔS) for an ideal gas when heated at constant volume is given by ΔS = nCvln(T2/T1). For diatomic gases like O2, Cv = (5/2)R. Here, n = 0.2 moles, T1 = 273 K, T2 = 373 K. ΔS = 0.2 * (5/2) * 8.314 * ln(373/273) = 1.82 J/K.

A Container Has 0