When the liquid phase and vapour phase of a binary system obeys Raoult’s and Dalton’s law respectively, the relative volatility is the ratio of________________________?

Vapour pressure of component A to the total pressure

Vapour pressure of component A to that of component B

Vapour pressure of component A to the partial pressure of A

Partial pressure of component A to the total pressure

When the liquid phase and vapour phase of a binary system obeys Raoult

1.	When the liquid phase and vapour phase of a binary system obeys Raoult’s and Dalton’s law respectively, the relative volatility is the ratio of________________________?
A.	Vapour pressure of component A to that of component B
B.	Vapour pressure of component A to the total pressure
C.	Vapour pressure of component A to the partial pressure of A
D.	Partial pressure of component A to the total pressure
Answer» B. Vapour pressure of component A to the total pressure