Mole ConceptHard

Question

At 300 K, the vapour pressure of an ideal solution containing 3 mole of A and 2 mole of B is 600 torr. At the same temperature, if 1.5 mole of A & 0.5 mole of C (non-volatile) are added to this solution the vapour pressure of solution increases by 30 torr. Then

Options

A.PBo = 1030
B.PAo = 940
C.PAo = 1410
D.PBo = 90

Solution

PoAxA + PoBxB
600 = PoA + PoB ; 3PoA + 2PoB = 3000
& 630 = PoA + PoB
1.5 PoA = 1410 ; PoA = 940 & PoB = 90

Create a free account to view solution

View Solution Free
Topic: Mole Concept·Practice all Mole Concept questions

More Mole Concept Questions

A 12 g sample of CH4 and C2H4 yielded 35.2 g of CO2 on complete oxidation. What was the mean molar mass of the original ...Two elements A and B combine to form compound X and Y. For the fixed mass of A, masses of B combined for the compounds X...In a textile mill, a double effect evaporator system concentrates weak liquor containing 4% (by mass) caustic soda to pr...A person needs an average of 2.0 mg of riboflavin (vitamin B2) per day. How many grams of butter should be taken by the ...2KI + I2 + 22 HNO3 → 2HIO3 + 2KIO3 + 22NO2 + 10H2OIf 3 mole of KI & 2 moles I2 are reacted with excess of HNO3. Vo...