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Relative lowering of vapour pressure is ...

Relative lowering of vapour pressure is maximum for

A

0.1 m urea

B

0.1 m NaCl

C

0.1 m `MgCl_2`

D

0.1 m `Al_2(SO_4)_3`

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The correct Answer is:
D
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The relative lowering of vapour pressure is equal to

Derive the relation between relative lowering of vapour pressure and molar mass of solute.

What is the relative lowering of vapour pressure ? How is it useful in determining the molecular weight of solute ?

What is relative lowering of vapour pressure ? How is it useful to determine the molar mass of a solute ?

When some amount of non-volatile solute is dissolved in a solvent to prepare a dilute solution, the vapour pressure of the solvent is lowered and it is directly proportional to the mole fraction of solvent in the solution . Relative lowering in vapour pressure is equal to mole fraction of solute . Elevation in boiling point of solvent is a collgative property like lowering in vaour pressure of solvent in solution , K_(b) i.e., molal elevation constant is calculated by the formula, K_(b)=DeltaT_(b)// molality and also by the expression, K_(b)=RT_(b)^(2)//1000l_(v) where T_(b) is boiling point of solvent and I_(v) is latent heat of vapourisation for 1 gm solvent . Abnormal elevation is boiling point =iX elevation in boiling point in ideal solution where i=van't Hoff factor Lowering in vapour pressure in an experiment was found to be x mm of Hg. It is : Lowering in vapour pressure in an experiment was found to be x mm of Hg. It is

When some amount of non-volatile solute is dissolved in a solvent to prepare a dilute solution, the vapour pressure of the solvent is lowered and it is directly proportional to the mole fraction of solvent in the solution . Relative lowering in vapour pressure is equal to mole fraction of solute . Elevation in boiling point of solvent is a collgative property like lowering in vaour pressure of solvent in solution , K_(b) i.e., molal elevation constant is calculated by the formula, K_(b)=DeltaT_(b)// molality and also by the expression, K_(b)=RT_(b)^(2)//1000l_(v) where T_(b) is boiling point of solvent and I_(v) is latent heat of vapourisation for 1 gm solvent . Abnormal elevation is boiling point =iX elevation in boiling point in ideal solution where i=van't Hoff factor Relative lowering in vapour pressure :

When some amount of non-volatile solute is dissolved in a solvent to prepare a dilute solution, the vapour pressure of the solvent is lowered and it is directly proportional to the mole fraction of solvent in the solution . Relative lowering in vapour pressure is equal to mole fraction of solute . Elevation in boiling point of solvent is a collgative property like lowering in vaour pressure of solvent in solution , K_(b) i.e., molal elevation constant is calculated by the formula, K_(b)=DeltaT_(b)// molality and also by the expression, K_(b)=RT_(b)^(2)//1000l_(v) where T_(b) is boiling point of solvent and I_(v) is latent heat of vapourisation for 1 gm solvent . Abnormal elevation is boiling point =iX elevation in boiling point in ideal solution where i=van't Hoff factor Molal elevation (K_(b))

What is relative lowering of vapour pressure ?

What is relative lowering of vapour pressure ?

AAKASH SERIES-SOLUTIONS -Objective Exercise -1
  1. Which has greater lowering of vapour pressure

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  2. The vapour pressure is least for

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  3. Relative lowering of vapour pressure is maximum for

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  4. Boiling point is least for

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

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

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

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

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

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

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

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  13. 15 cm^3 of liquied 'x' and 20 cm^3 of liquid 'y' are mixed at 20^@C an...

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

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  15. Which one of the following is not correct ?

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

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

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

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

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  20. 6 g of urea is dissolved in 90g of boiling water. The vapour pressure ...

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