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The vapour pressure of methanol at certa...

The vapour pressure of methanol at certain temperature is 1 atm. By adding a small amount of ethyl acetate the vapour pressure of the solution is found to be 684 mm. The relative lowering of vapour pressure is

A

`0.1`

B

`0.9`

C

76

D

`0.694

Text Solution

Verified by Experts

The correct Answer is:
A
Relative lowering of vapour pressure `=(P^(@)-P)/(P^(@))`
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