Question 01
Which of the following units is useful in relating concentration of solution with its vapour pressure?
(a) Mole fraction (b) Parts per million
(c) Mass percentage (d) Molality
(a) According to Henry's law partial pressure of gas in the solution is proportional to the mole fraction of gass in the solution.
p=kHx
where, KH = Hnery's constant
Hence, (a) mole fraction is the correct choice.