Calculate the standard entropy of vaporization of ethanol at its boiling point,352 K.The standard molar enthalpy of vaporization of ethanol at its boiling point is 40.5 J.K^-1.mol^-1. A)+40.5 J.K^-1.mol^-1 B)+115 J.K^-1.mol^-1 C)(-40.5 J.K^-1.mol^-1) D)+513 J.K^-1.mol^-1 E)(-115 J.K^-1.mol^-1)

Question

Quizplus · Accepted Answer

The standard entropy of vaporization is calculated using the formula ΔS_vap = ΔH_vap / T. Here, ΔH_vap = 40.5 J/mol and T = 352 K, so ΔS_vap = 40.5 J/mol / 352 K = 0.115 J/K/mol, which is approximately +115 J/K/mol.

Calculate the Standard Entropy of Vaporization of Ethanol at Its