Home
Class 12
CHEMISTRY
At 293 K, vapour pressure of pure benze...

At 293 K, vapour pressure of pure benzene is 75mm of Hg and that of pure toluene is 22 mm of Hg. The vapour pressure of the solution which contains 20 mol% benzene and 80 mol % toluene is

A

32.6 mm Hg

B

64.4 mm Hg

C

97 mm Hg

D

3.26 mm Hg

Text Solution

Verified by Experts

The correct Answer is:
A
`n_(Ben)=20%0.2`
`n_(Tol)=80%=0.8`
`P_(s)=X_(B)P_(B)^(@)+X_(T)P_(T)^(@)`
`P_(s)=0.2xx75+0.8xx22`
`=15.0+17.6`
`32.6`
Promotional Banner

Topper's Solved these Questions

  • CHEMISTRY AT A GLANCE

    ALLEN|Exercise INORGANIC CHEMISTRY|300 Videos

  • CHEMISTRY AT A GLANCE

    ALLEN|Exercise ORGANIC CHEMISTRY|483 Videos

  • Chemical Equilibrium

    ALLEN|Exercise All Questions|24 Videos

  • ELECTROCHEMISTRY

    ALLEN|Exercise EXERCISE -05 [B]|38 Videos

Similar Questions

Explore conceptually related problems

Benzene and toluene form nearly ideal solution. At 20^(@)C the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of benzene at 20^(@)C for a solution containing 78g of benzene and 46 g of toluene in torr is-

Benzene and toluene form nearly ideal solutuions. At 20^(@)C , the vapour pressure of benzene is 75 torr and that of toulene is 22 torr. The partial vapour pressure of benzene at 20^(@)C for a solution containing 78g of benzene and 46g of toluene in torr is

The vapour pressure of pure benzene at 25^@C is 640 mm Hg and that of the solute A in benzene is 630 mm of Hg. The molality of solution of

Benzene and toluene form nearly ideal solution. At 298 K , the vapour pressure of pure benzene is 150 torr and of pure toluence is 50 torr. Calculate the vapour pressure of the solution, containing equal weights of two substances at this temperature?