Home
Class 12
CHEMISTRY
A mixture of ethyl alcohol and propyl al...

A mixture of ethyl alcohol and propyl alcohol has a vapour pressure of 290 mm at 300K. The vapour pressure of propyl alcohol is 200 mm. if the mole fraction of ethyl alcohol is `0.6`, its vapour pressure (in mm) at the same temperature will be

A

350

B

300

C

700

D

360

Text Solution

Verified by Experts

The correct Answer is:
A
`EtoH(A) PrOH(B), P_(T) = P_(A)^(@) x_(A) +P_(B)^(@) (1-x_(A))`
`290 = P_(A)^(@) xx 06 +200 xx 0.4`
`P_(A)^(@) = 360 mm Hg`
Promotional Banner

Similar Questions

Explore conceptually related problems

At 88^(@)C benzene has a vapour pressure of 900 torr and toluene has vapour pressure of 360 torr. What is the mole fraction of benzene in the mixture with toluene that will be boil at 88^(@)C at 1 atm pressure, benzene- toluene form an ideal solution.

A solution containing 30g of a nonvolatile solute in exactly 90g water has a vapour pressure of 21.85 mm Hg at 25^(@)C . Further 18g of water is then added to the solution. The resulting solution has vapour pressure of 22.18 mm Hg at 25^(@)C . calculate (a) molar mass of the solute, and (b) vapour pressure of water at 25^(@)C .