Question

A mixture of three liquids x,y and z when subject to fractional distillation, the order in which the vapours condense back to liquid state in fractionating tower is y,x and z. arrange them in correct order of vapour pressures.
a: z< x

Answer 1

Answer:

the correct order of vapour pressure is z<x<y

Explanation:

this order can be explained on the basis of vapour pressure values the liquid whose vapour will condense early means it has high vapour pressure value accroding to the question the order is z<x<y

Answer 2

Answer:

Y<X<Z

Explanation:

vapour pressure is the pressure of the liquid

boiling point is the temperature at which vapour pressure equals to atmospheric pressure (p∝t)

During fractional distillation the liquid with high bp(boiling point) condenses first .

the liquid with high bp condenses first

so the liquid with low vapour pressure condenses first and  liquid with high vapour pressure condenses last