(a) Define the following terms : (i) Molarity (ii) Molal elevation – InterviewSolution

1.	(a) Define the following terms : (i) Molarity (ii) Molal elevation constant (Kb) (b) A solution containing 15 g urea (molar mass = 60 g mol−1) per litre of solution in water has the same osmotic pressure (isotonic) as a solution of glucose (molar mass = 180 g mol−1) in water. Calculate the mass of glucose present in one litre of its solution.
Answer» (a) Define the following terms : (i) Molarity (ii) Molal elevation constant $(K_{b})$ (b) A solution containing 15 g urea (molar mass = $60 g m o l^{- 1}$ ) per litre of solution in water has the same osmotic pressure (isotonic) as a solution of glucose (molar mass = $180 g m o l^{- 1}$ ) in water. Calculate the mass of glucose present in one litre of its solution.

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