Which of the following units is useful in relating concentration of so – InterviewSolution

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1.	Which of the following units is useful in relating concentration of solution with its vapour pressure ?
Answer» Mole fraction Parts per million Mass percentage Molality SOLUTION :Explanation : It is mole fraction (x) which is useful in RELATING concentration of solution with its vapour presure. For EXAMPLE according to Rault.s law in a binary solution of two volatile liquids, `p_(1)=x_(1)p_(1)^(0)` where `p_(1)` is vapour pressure of component I, and `x_(1)` is its mole fraction in solution, `p_(1)^(0)` DENOTES the vapour pressure of pure solvent.

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