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Practice question on ch ' solutions ' . class12
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It contains practice question or PYQ's of chapter ' solutions ' of class 12 chemistry .
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Practice questions – solutions1) The freezing point of the solution obtained by dissolving 0.5
mole of glucose in 500g of water will be ?
2) The boiling point of 0.1 molal aqueous solution of urea is
100.18 °C at 1atm . The molal elevation constant of water is ?
3) The vapour pressure of water at 20°C is 18mmHg . When 20g of
a non-ionic substance is dissolved in 100g of water , the
vapour pressure is lowered by 6 mm Hg . What is the molar
mass of non ionic substance ?
4) Find molar mass of a non volatile solute whose 20g on
dissolving in 5000g of water produces a solution having boiling
point 105.2°C . ( kb = 0.52 K kg mol-1 )
5) Mole fraction of solute in an aqueous solution is 0.2 . Molarity
of solution ?
6) 36.5% HCl has density equal to 1.20g/ml . Find molarity and
molality .
7) Find the molality of an aqueous solution of urea which has a
boiling point of 102.08°C . ( Take kb = 0.52 K kg mol-1 )
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