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Why is the vapour pressure of a solvent...

Why is the vapour pressure of a solvent lowered on the addition of non-volatile solute into it ?

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When a non-volatile solute is added into a solvent, some of the atoms of solvent on the surface are replaced by the solute particle. As a result of it, the number of particles of solvent decreases and hence vapour pressure also decrease.
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ACCURATE PUBLICATION-SOLUTIONS -3 MARK QUESTION
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  7. What is a semi-permeable membrane ?

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  9. What concentration of NaCl is isotonic with fluids present in Human RB...

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  10. For what solute did the values of Molar mass is more or value of colli...

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  11. What is degree of dissociation of association ?

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  12. Do molality and mole fraction changes with temperature ?

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  13. Why aquatic species feel more comfortable in cold water than hot water...

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  14. Which colligative property is preferred for the molecular mass determ...

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  15. Show that relative lowering in vapour pressure is a colligative pr...

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  16. How will you show that elevation in boiling point is a colligative pro...

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  17. How will you show that depression in freezing point is a colligative p...

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  18. Osmotic Pressure (pi).

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  19. Write differences between ideal and non-ideal solutions.

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  20. Write differences between ideal and non-ideal solutions.

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