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Short Answer Type

31. What is Van’t Hoff factor i of the compound AlCl₃?

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32. Define Van’t Hoff factor ‘i’?

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33. Define an ideal solution.

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34. Differentiate between molarity and Molality?

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35. What is the Van’t Hoff factor of a compound which undergoes tetramerisation in an organic solvent?

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36. State Raoult’s law for dilute solutions?

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37. Define Molality in terms of elevation in boiling point?

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38. What are azetropes? Give an example.

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39. What is the sum of the mole fraction of all the components in a three component system?

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40. What is meant by vapour pressure? What is effect of temperature on it?

Answer:
It can be defined as the pressure exerted by vapour over the liquid surface is called vapour presure.
vapour pressure is directly proportional to temperature.

It increases with increase in temperature.

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