Home
Class 12
CHEMISTRY
The vapour pressure of acetone at 20...

The vapour pressure of acetone at `20^(@) C ` is 185 torr when 1.2 g of a non - volattile substance was dissolved in 100 g of acetone at `20^(@) C ` ,its vapour pressure was 183 torr . The molar mass `( g mol ^(-1) ) ` of the substance . is molar mass `( g mol ^(-1))` of the substance is ______.

A

`32`

B

`64`

C

`128`

D

`488`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

The vapour pressure is least for

Vapour pressure of a solution is

What is vapour pressure of a liquid?

The vapour pressure of water at 20^(@)C is 17.54 mm . When 20 g of a non-ionic , substance in dissolved by 0.30 mm . What is the molecular weight of the substance ?

Explain unit of vapour pressure.

Vapour pressure of a solution is ______.

The vapour pressure of benzene at 80^@C is lowered by 10 mm by dissolving 2g of a non- volatile substance in 78 g of benzene . The vapour pressure of pure benzene at 80^(@)C is 750 mm . The molecular mass of the substance will be _______ g mol ^(-1) ?

When a substance is dissolved in a solvent the vapour pressure of solvent decreases. This brings:

The vapour pressure will be lowest for _______.

Write a short note on Vapour pressure