JEE Main 2022 Chemistry question
Solute A associates in water. When 0.7 g of solute A is dissolved in 42.0 g of water, it depresses the freezing point by 0.2°C. The percentage association of solute A in water is : [Given : Molar mass of A = 93 g . Molal depression constant of water is 1.86 K kg ]
Answer: (4)
Solution
m with m = (0.7/93)(1000/42). So 1000/(93 $×
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