What is the correct sequence of the increasing order of freezing point at one atmosphere of the following 0.01 M aqueous solution?
$1 .$ Urea, $2 .$ Potassium chloride, $3 .$ Potassium sulphate, $4 .$ Potassium phosphate.
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vant Hoff factors for urea, KCl, K 2 S O 4 and K 3 P O 4 are 1, 2, 3 and 4 respectively. As Δ T f ∝ i m , so Δ T f for urea, KCl, K 2 S O 4 and K 3 P O 4 are proportional to 1, 2, 3 and 4 respectively. Hence, freezing point order is K 3 P O 4 < K 2 S O 4 < K C l < Urea

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