7227. 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

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Vapour pressure of component A to that of component B
Vapour pressure of component A to the total pressure
Vapour pressure of component A to the partial pressure of A
Partial pressure of component A to the total pressure
✅ The correct answer is option A.

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