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Relative loweringof vapour pressure of a...

Relative loweringof vapour pressure of a dilute solution is `0.2`. What is the mole fraction of non-volatile solute ?

A

`0.8`

B

`0.5`

C

`0.3`

D

`0.2`

Text Solution

Verified by Experts

The correct Answer is:
D
Relative lowering of vapour pressure is equal to mole fraction of soluble.
`therefore` Mole fraction of solute `=0.2`.
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