Which of the following units is useful in relating concentration of solution with its vapour pressure?
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a
Mole fraction
b
Parts per million
c
Mass percentage
d
Molality
answer is A.
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Detailed Solution
According to Henry's law partial pressure of gas in the solution is proportional to the mole fraction of gas in the solution. p=KHxwhere, KH=Henry's constant Hence, (a) mole fraction is the correct choice.