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The vapour pressure of a solvent decreas...

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 ?

A

0.2

B

0.4

C

0.6

D

0.8

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-SOLUTIONS -Objective Exercise -2
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  2. If 2 moles of A and 3 moles of B are mixed to form an ideal solution v...

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  3. The vapour pressure of a solvent decreased by 10 mm of mercury, when a...

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  4. The vapour pressure of pure benzene is 640 mm at 298K. A solution of a...

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  5. The vapour pressure of water at room temperature is 23.8 mm Hg. The va...

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  6. The vapour pressure of pure A is 10 torr and at the same temperature w...

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  7. The percentage composition by weight of an aqueous solution of a solut...

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  8. Molality of an aqueous solution that produces an elevation of boiling ...

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  9. The molal elevation constant of water is 0.51. The boiling point of 0....

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  13. A solution containing 3.3g of a substance in 125g of benzene (b.pt. = ...

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  14. An aqueous solution freezes at - 0.372^@C. If Kf and Kb for water are ...

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  15. Which of the following aqueous solutions should have the highest boili...

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  16. The depression in freezing point of 0.01 m aqueous solution of urea, s...

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  17. Molal depression constant is given by the expression:

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  18. To 500 "cm"^3 of water. 3.0 xx 10^(-3) kg of acetic acid is added. If ...

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  19. 'x' gm of solute (M. mass = 342) should be dissolved in 500gm of water...

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