MHT CET 2022 Chemistry question
What is the molar mass of solute when 5 gram solute dissolved in 70 gram solvent lowers its freezing point by 2.5 K?
(cryoscopic constant for solvent is 4.9 K kg mol)
Answer: (D)
Solution
Depression of freezing point , with g, g, K kg mol and K. So $ =
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