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NEET 2007 Chemistry question

ChemistrySolutionsNEET 2007

0.5 molal aqueous solution of a weak acid (HX) is 20% ionized. If for water is , the lowering in freezing point of the solution is

Answer: (4)

Solution

with degree of ionization , so the van't Hoff factor . The depression of freezing point is T_fK_f$ m = 1.2

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Question ID VK-089844