Home
Class 12
CHEMISTRY
At 80^(@)C the vapour pressure of pure l...

At `80^(@)C` the vapour pressure of pure liquid 'A' is 520 mm Hg and that of pure liquid 'B' is 1000 mm Hg. If a mixture solution of 'A' and 'B' boils at `80^(@)C` and 1 atm pressure, the amount of 'A' in the mixture is (1 atm `= 760 mm Hg)`

A

`34` mol percent

B

`48` mol percent

C

`50` mol percent

D

`52` mol percent

Text Solution

Verified by Experts

The correct Answer is:
C
`P_("total")=P_(A)^(@)x_(A)+P_(B)^(@)x_(A)`
`760=520x_(A)+1000(1-x_(A))`
`760=520x_(A)+1000-1000x_(A)`
`x_(A)=0.5`
mol `%=50%`
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    RESONANCE|Exercise EXERCISE-3(PART-3)|30 Videos

  • SOLUTIONS

    RESONANCE|Exercise Advabced Level Problems (PART-1)|71 Videos

  • SOLUTIONS

    RESONANCE|Exercise EXERCISE-3(PART-1)|14 Videos

  • SOLUTION AND COLLIGATIVE PROPERTIES

    RESONANCE|Exercise PHYSICAL CHEMITRY (SOLUTION & COLLIGATIVE PROPERTIES)|52 Videos

  • STEREOISOMERISM

    RESONANCE|Exercise EXERCISE (PART III : PRACTICE TEST-2 (IIT-JEE (ADVANCED PATTERN))|22 Videos

Similar Questions

Explore conceptually related problems

At 80^(@)"C" , the vapour pressure of pure liquid 'A' is 250 mm Hg and that of pure liquid 'B' is 1000 mm Hg. If a mixture solution of 'A' and 'B' boils at 80^(@)"C" and 1 atm pressure, the amount of 'A' in the mixture is : "(1 atm=760 mm of Hg)"

At 80^(@)C , the vapour pressure of pure liquid 'A' is 520 mm Hg and that of pure liquid 'B' is 1000 mm Hg. If a mixture solution of A and B boil at 80^(@)C and 1 atm pressure, than the amount of A in the mixture is (! Atm = 760 mm Hg)

At 80^@C , the vapour pressure of pure liquid A is 520 mm Hg and that of pure liquid B is 1000 mm Hg . If a mixture of solution A and B boils at 80@C and 1 atm pressure, the amount of A in the mixture is (1 atm =760 mm Hg) a. 50 mol % , b. 52 mol % ,c. 34 mol% ,d. 48 mol %

At 20^@C , the vapour pressure of pure liquid A is 22 mm Hg and that of pure liquid B is 75 mm Hg . What is the composition of the solution of these two components that has vapour pressure of 48.5 mm Hg at this temperature?

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