JEE Advanced 2022 Chemistry question
An aqueous solution is prepared by dissolving 0.1 mol of an ionic salt in 1.8 kg of water at 35 ºC. The salt remains 90% dissociated in the solution. The vapour pressure of the solution is 59.724 mm of Hg. Vapor pressure of water at 35 ºC is 60.000 mm of Hg. The number of ions present per formula unit of the ionic salt is .
Answer: 5
Solution
Relative lowering of vapour pressure = mole fraction of solute particles (1.8 kg water = 100 mol). $0.1i
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