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A non-volatile solute (A) is dissolved i...

A non-volatile solute (A) is dissolved in a volatile solvent (B). The vapour pressure of the resultant solution is `P_(s^(*))`. The vapour pressure of pure solvent is `P_(B)^(@)`. If `X_(B)` is the mole fraction of the solvent, which of the following is correct?

A

`P_S=P_B^0 . X_A`

B

`P_B^0=P_S X_B`

C

`P_S = P_B^0 . X_B`

D

`P_B^0 = P_S X_A`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-SOLUTIONS -Objective Exercise -1
  1. Relative lowering of vapour pressure is maximum for

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  2. Boiling point is least for

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  3. A non-volatile solute (A) is dissolved in a volatile solvent (B). The ...

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  4. A solution that obeys Raoult's law is called

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  5. If x1 and x2 represent the mole fraction of a component A in the vapou...

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  6. Two liquids X and Y form an ideal solution. The mixture has a vapour p...

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  8. X is a non- volatile solute and Y is a volatile solvent. The following...

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  9. For an ideal solution of two components A and B, If xA and yA are mole...

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  10. A liquid is in equilibrium with its vapour at its boiling point, on th...

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  11. 15 cm^3 of liquied 'x' and 20 cm^3 of liquid 'y' are mixed at 20^@C an...

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  12. Acetone (BP 329K) and CS2 (BP 320K) are mixed in a definite compositio...

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  13. Which one of the following is not correct ?

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  14. Which of the following statements are correct (a) the boiling point ...

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  15. The graph obtained by taking vapour pressure (P) of a liquid on y-axis...

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  16. Which graph of the following represents the graph between log p (on Y ...

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  17. Which of the following solutions will have the lowest vapour pressure

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  18. 6 g of urea is dissolved in 90g of boiling water. The vapour pressure ...

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  19. At a given temperature (a) Vapour pressure of a solution containing ...

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  20. As temperature increases, vapour pressure of a liquid

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