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What is the influence of added non-volat...

What is the influence of added non-volatile solute on the boiling point of solvent ?

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The vapour pressure of solvent in a solution is less. Therefore temperature must be raised to make the vapour pressure of the solution equal to the atmospheric pressure. Hence, boiling point of solution will be greater than that of the solvent.
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What is elevation of boiling point ?

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))

Lowering of vappour pressure of 1.00m solution of a non-volatile solute in a hypothetical solvent of molar mass 40g at tis normal boiling Point is

What happens to the vapour pressure of a liquid when a non-volatile solute is dissolved in it ?

What weigth of a non-volatile solute (molar mass 40 g) should be dissolved in 114 g of octance to reduce its vapour pressure by 20%.

AAKASH SERIES-SOLUTIONS -Objective Exercise -4
  1. What is the influence of added non-volatile solute on the boiling poin...

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  2. Assertion : Molarity of a solution decreases with an increase of tempe...

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  3. Assertion : Molality is independent of temperature Reason : There is...

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  4. Assertion : Mole fraction has no units Reason: Mole fraction is a r...

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  5. Assertion: Pressure does not have significant effect on solubility of ...

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  6. Assertion: Increase in temperature increases vapour pressure of a liq...

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  7. Assertion :Rate of evaporation increases with an increase in the surfa...

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  8. Assertion : Sea water boils at higher temperature than distilled water...

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  9. Assertion: A pressure cooker reduces cooking time Reason: The boili...

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  10. Assertion : Vapour pressure of 0.5M sugar solution is more than 0.5M K...

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  11. Assertion : For two solutions, 0.1m aqueous solution of glucose and 0....

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  12. Assertion: If one component obeys Raoult's law over a certain range of...

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  13. Assertion: A solution is a homogeneous mixture of two or more chemical...

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  14. Assertion: The solubility of the gas in a liquid increa ses with incr...

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  15. Assertion: One molal aqueous solution of urea con tains 60g of urea in...

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  16. Assertion: One molar aqueous solution (d=1gm/cc) has always higher con...

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  17. Assertion: The pressure exerted by the vapour of a liquid at equilibri...

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  18. Assertion: At the same temperature water has higher vapour pressure th...

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  19. Assertion: Osmotic pressure is a colligative property. Reason: Osmo...

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  20. Assertion:Vapour pressure of water is less than 373K at 1.013 bar. R...

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  21. Assertion: Azeotropic mixtures are formed only by non-ideal solutions...

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