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MHT CET Chemistry question

ChemistrySolutionsMHT CET

The vapour pressure of water at is 17.54 mm. When 20 g of a non-ionic substance is dissolved in 100 g of water, the vapour pressure is lowered by 0.30 mm. What is the molecular mass of the substance?

Answer: (B)

Solution

gives ; with , mol, so $M = 20/0.0967 =

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Question ID VK-061305