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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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Answer:

An azeotrope is a mixture of two or more liquid whose proportions cannot be altered by simple distillation.

For example, H₂O (4.13%) + C₂H₅OH (95.87%) mixture boils at a constant temperature of 78.15⁰C.

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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?

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