JEE Main 2022 Chemistry question
A 0.5 percent solution of potassium chloride was found to freeze at −0.24°C. The percentage dissociation of potassium chloride is . (Nearest integer) (Molal depression constant for water is 1.80 K kg and molar mass of KCl is 74.6 g )
Answer: 98
Solution
A 0.5% solution has 0.5 g of KCl in 99.5 g of water. = gives (99.5/... = ($0.24 ×
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