JEE Main 2022 Chemistry question
The depression in freezing point observed for a formic acid solution of concentration 0.5 mL is 0.0405°C. Density of formic acid is 1.05 g . The Van't Hoff factor of the formic acid solution is nearly (Given for water = 1.86 K kg )
Answer: (3)
Solution
The mass of formic acid in 1 L of solution is g, so the molality (taking 1 L of water as 1 kg) is (0.525/46)/1 mol
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