An ideal solution was found to have a vapour pressure of 80 torr when the mole fraction of a non-volatile solute was 0.2. What would be the vapour pressure of the pure solvent at the same temperature?
A
64 torr
B
80 torr
C
100 torr
D
400 torr
Text Solution
Verified by Experts
The correct Answer is:
C
Topper's Solved these Questions
DILUTE SOLUTION
NARENDRA AWASTHI|Exercise Level 2|1 Videos
DILUTE SOLUTION
NARENDRA AWASTHI|Exercise Level 3 - Match The Column|1 Videos
The vapour pressure of a solution containing non volatile solute is less than the vapour pressure of pure of solvent. Give reason.
The vapour pressure of 4% solution of a non-volatile solute in water at 100^@C is 745 mm. What is the molecular weight of solute?
An ideal solution of hexane and heptane at 30^(@)C has a vapour pressure of 95 bar with hexane mole fraction 0.305. in vapour phase hexane mole fraction is 0.555. The vapour pressure of pure hexane and heptane at 30^(@)C respectively in bar are
What happens to the vapour pressure of a liquid when a non-volatile solute is dissolved in it ?
The vapour pressure of a solvent decreased by 10 mm of mercury, when a non-volalite solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in the vapour pressure is to be 20 mm of mercury ?
Calculate the vapour pressure , if 0.083 mole of a non-volatile solute is present in 80 g of ethanol at 25^@C , Vapour pressure of ethanol is 22.45 mm.
A gas 'X' is dissolved in water at '2' bar pressure. Its mole fraction is 0.02 in solution. The mole fraction of water when the pressure of gas is doubled at the same temperature is
Assertion : Sea water boils at higher temperature than distilled water Reason : Addition of non volatile solute to a solvent lowers the vapour pressure
At 20^@C , the vapour pressure of diethyl ether is 442mm. When 6.4g. of a non-volatile solute is dissolved in 50g. of ether, the vapour pressure falls to 410mm. The Molecular weight of the solute is
Which of the following solutions will have the lowest vapour pressure
NARENDRA AWASTHI-DILUTE SOLUTION-Level 3 - Match The Column
