Trouton’s ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K) ___________________?
Correct answer: A
Explanation
The formula for Trouton's ratio is the ratio of the molar enthalpy of vaporization ($\lambda_b$) to the normal boiling temperature ($T_b$).