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If Raoult's law is obeyed, the vapour pr...

If Raoult's law is obeyed, the vapour pressure of the solvent in a solution is directly proportional to

A

(1-mole fraction of solute)

B

mole fraction of the solvent and solute

C

the volume of the solution

D

the volume of the solution

Text Solution

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The correct Answer is:
A
V.P. prop Mole fraction of solvent i.e V.P. prop (1- mole fraction of solute
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STATEMENT-1 : For solution of volatile liquids, the partial vapour pressure of each component in the solution is directly proportional to its mole fraction. STATEMENT-2 : Always there will be lowering of vapour pressure on addition of non-volatile solute to a solvent. STATEMENT-3 : If there is dissociation of non-volatile then the V.P. of solution increases.

Identify the law which is stated as: For any solution, the partial vapour pressure of each volatile component in the solution is directly proportional to its mole fraction.

The relative lowering of vapour pressure in case of dilute solution is directly proportional to:

Read the passage given below and answer the following questions : Raoult's law states that for a solution of volatile liquids, the partial vapour pressure of each component of the solution is directly proportional to its mole fraction present in solution. Dalton's law of partial pressure states that the total pressure P_("total") over the solution phase in the container will be the sum of the partial pressures of the components of the solution and is given as: P_("total") = P_1 + P_2 Which of the following aqueous solutions should have the highest boiling point ?

Read the passage given below and answer the following questions : Raoult's law states that for a solution of volatile liquids, the partial vapour pressure of each component of the solution is directly proportional to its mole fraction present in solution. Dalton's law of partial pressure states that the total pressure P_("total") over the solution phase in the container will be the sum of the partial pressures of the components of the solution and is given as: P_("total") = P_1 + P_2 A solution of two liquids boils at a temperature more than the boiling point of either of them. What type of deviation will be shown by the solution formed in terms of Raoult' s law ?

Statement Addition of a non-volatile solute causes a depression in vapour pressure. Explanation vapour pressure of a solution is directly proportional to mole fraction of solvent.

NIKITA PUBLICATION-SOLUTION & COLLIGATIVE PROPERTIES -Questions from Competition Exam
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  3. The BaCl(2) ionises to an extent of 80% in aqueous solution, the value...

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  4. Equal masses of methane and oxygen are mixed in an empty container at ...

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  5. An aqueous solution is 1.00 molal in KI. Which change will cause the v...

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  6. A solution of sucrose (molar mass = 342 "g mol"^(-1)) has been prepare...

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  7. If sodium sulphate is considered to be completely dissociated into cat...

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  8. If 10^(-4) dm^(3) of water is introduced into a 1.0 dm^(3) flask to 30...

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  9. On mixing, heptane and octane form an ideal solution. At 373K the vapo...

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  10. K(b) for water is 0.52 K/m. Then, 0.1 m solution of NaCl will boil app...

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  11. 138 g of ethyl alcohol is mixed with 72 g of water. The ratio of mole ...

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  12. Two solutions of a substance (non-electroyte) are mixed in the followi...

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  13. 20 g of a binary electrolyte (Molecular mass =100) are dissolved in 50...

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  14. Which one of the following in the ratio of the lowering of V.P. of 0.1...

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  15. A 0.1 molal aqueous solution of a weak acid is 30% ionized. If K(f) fo...

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  16. 200 mL of an aqueous solution of a protein contains its 1.26g. The osm...

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  17. The freezing point depression constant for water is 1.86^(@)K Kgmol^(-...

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  18. The van't Hoff factor i for a compound which undergoes dissociation in...

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  19. Mole fraction of a solution in 1.00 molal aqueous solution is

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  20. The degree of dissociation (alpha) of a weak electrolyte A(x)B(y) is ...

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  21. Ethylene glycol is used as an antifreeze in a cold climate. Mass of et...

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