Q. The ratio of molar heats of vaporization and boiling point of a liquid is constant. This is known as
A) Ostwald’s rule
B) Phase rule
C) Vant Hoff rule
D) Trouton’s rule
Explanation
(d)
According to Trouton’s rule,
$\frac{\mathrm{\Delta}H_{vap}}{T_{b}} = 21\ cal\ K^{- 1}\ mol^{- 1}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.