The relative lowering of vapour pressure caused by dissolving 71.3 g of a substance in 1000g of water is 7.13*10^-3. The molecular mass of substance is
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The vapour pressure of a solvent is lowered when a non volatile solute ia dissolved in it to form a solution the vapour preasure lowering relative to pure solvent is which is proportional to the mole fraction of solute
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