Calculate the molality of KI if the density of 20% (mass/mass) aqueous KI is 1.202gmL-1
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Molar mass of KI = 39 + 127 = 166 g mol−1 20% (mass/mass) aqueous solution of KI means 20 g of KI is present in 100 g of solution. ...it is given that the density of the solution = 1.202 g mL−1 ∴Volume of 100 g solution = Mass Density. ...Moles of KI = 20 166 = 0.12 mol.
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