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171. The Van’t Hoff factor for phenol which demerizes in benzene is________.

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172. Relative lowering of vapour pressure is equal to the mole fraction of a __________ in the solution.

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173. The S.I. unit of boiling point elevation constant K_p are _______.

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174. The value of K_f for water is smaller than its K_b

True

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175. For a dilute solution, mole fraction of a solute is directly proportional to the molality of the solution.

True

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176. The Van’t Hoff factor of Ca(NO₃)₂ when it is completely dissociated is 1/3.

False

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177. Colligative properties do not depend upon the amount of solution in the solution.

False

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178. The modified depression of freezing point colligative property is

∆ T_{f} = {iK}_{fm} .

True

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179. Non-ideal solutions always show higher vapour pressure than the ideal solutions.

False

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180. The solubility of a gas increases with increase in temperature.

False

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