Molarity and molality of a solution 2m and 2.5 m respectively weight of solvent present in 1 litre solution is
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The molality of solution is always greater than the molarity. Actually, in molarity we calculate mol per unit L (i.e. volume of solution) while in molality we calculate moles per unit Kg (i.e. mass of solvent). So, anyhow mass of solvent is less than volume of solution and thus the molality will be greater.
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