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The vapour pressure of pure benzene is 6...

The vapour pressure of pure benzene is 640 mm at 298K. A solution of a solute in benzene shows a vapour pressure of 630 mm at the same temperature. Then the mole fraction of the solute is

A

0.016

B

0.18

C

`0.20`

D

`0.25`

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

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

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

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

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

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

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

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

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  9. Ebullioscopy is concerned with:

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  10. An aqueous solution containing one gram of urea boils at 100.25^@C. Th...

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  11. A solution prepared by dissolving 0.8gm of naphthalene in 100g of C Cl...

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

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

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

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

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  16. Molal depression constant is given by the expression:

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

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

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  19. The amount of ice that will separate out on cooling the solution conta...

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  20. A Solution of a non-volatile solute in water freezes at -0.30^@C. The ...

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