Q. The statement “the relative lowering of the vapour pressure is equal to th ratio ot moles of the solute to the total number of the moles in the solution” refers to
A) Hess’s law
B) Dalton’s law
C) Raoult’s law
D) Charles’law
Explanation
(c)
According to Raoult’ law,
$\frac{p - p_{s}}{p} = \frac{n}{n + N}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.