Use Trouton's constant to estimate the enthalpy of vaporization of diethyl ether,which boils at 309 K. A)+85 kJ.mol^-1 B)+26 kJ.mol^-1 C)+275 kJ.mol^-1 D)(-85 kJ.mol^-1) E)+3.6 kJ.mol^-1

Question

Quizplus · Accepted Answer

Trouton's rule states that the entropy of vaporization is approximately 85 J/mol·K for many liquids. Using this, ΔHvap = T * ΔSvap = 309 K * 85 J/mol·K = 26,265 J/mol ≈ 26 kJ/mol.

Use Trouton's Constant to Estimate the Enthalpy of Vaporization of Diethyl