Home
Class 12
CHEMISTRY
The vapour pressure of a solvent is foun...

The vapour pressure of a solvent is found to be 400 mm Hg at 300 K. When a certain amount of a nonvolatile solute is added to 50 mol of the solvent its vapour pressure decreases to 360 mm Hg. The amount of solute added is

A

2.41 mol

B

3.42 mol

C

4.54 mol

D

5.55 mol

Text Solution

Verified by Experts

The correct Answer is:
D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SOLUTIONS

    PATHFINDER|Exercise QUESTION BANK|250 Videos

  • SOLUTION

    PATHFINDER|Exercise QUESTION BANK|28 Videos

  • SURFACE CHEMISTRY

    PATHFINDER|Exercise QUESTION BANK|41 Videos

Similar Questions

Explore conceptually related problems

The vapour pressure of a solvent at 25^@C is 270 mm Hg. Calcualte the number of moles of a non-volatile solute per mole of solvent needed to get a solution with vapour pressure 170 mm Hg at 25^@C .

The vapour pressure of a solvent decreases by 10 mm of Hg when a non-volatile solute is added to it. The mole fraction of the solute in solution is equal to 0.2. What should be the mole fraction of solvent if the decrease in vapour pressure is to be 20 mm Hg?

Knowledge Check

  • The vapour pressure of acetone at 20^@C is 185 torr. When 1.2 g of a non-volatile solute was dissolved in 100 g of acetone at 20^@C its vapour pressure was 183 torr. The mass (g mol^(-1)) of the substance is.

    A
    64
    B
    128
    C
    488
    D
    32

  • Two liquids A and B from ideal solutions. At 300 K, the vapour pressure of solution containing 1 mote of A and 3 mole of B is 550 mm Hg. At the same temperature, if one more movie of B is added to this solution, the vapour pressure of the solution increasés by 10 mm Hg. Determine the vapour pressure of A and B in their pure states (in mm Hg) :

    A
    400, 600
    B
    500, 500
    C
    600, 400
    D
    None of these

    • Similar Questions

    Explore conceptually related problems

    The vapour pressure of a dilute aqueous of glucose is 750 mm of mercury at 373 K. The mole fraction of solute is

    The vapour pressure of an aqueous solution of sucrose at 373 K is found to be 750 mm Hg. The molality of the solution at the same temperature will be :

    The vapour pressure of pure benzene at a certain temperature is 640 mm of Hg. A non-volatile non-electrolyte solid weighing 2.175 g is added to 39 g of benzene. The vapour pressure of the solution is 600 mm of Hg. What is molecular weight of solid substance?

    Two liquids A and B form an ideal solution. At 300 k, the vapour pressure of a solution containing 1 mole of A and 3 moles of B is 550 mm of Hg. At the same temperature, if one mole of B is added to this solution, the vapour pressure of the solution increases by 10 mm of Hg. Determine the vapour pressure of A and B in their pure states.

    The vapour pressure of pure liquids A and B are 450 and 700mm Hg respectively, at 350K.Find out the composition of the liquid mixture if total vapour pressure is 600 mm Hg. Also find the composition of the vapure phase.

    When certain solute particles are added to the pure solvent the diffusion pressure of resulting solution is lowered by an amount expressed in term of

    Home
    Profile