A solution containing 10 g per dm3 of urea (molar mass 60 g mol-1) is isotonic with 5% solution of non-volatile solute, MB of solute is (a) 300 g mol-1 (b) 350 g mol-1 (c) 200 g mol-1 (d) 250 g mol-1

A solution containing 10 g per dm3 of urea (molar mass 60 g mol-1) is

1.	A solution containing 10 g per dm3 of urea (molar mass 60 g mol-1) is isotonic with 5% solution of non-volatile solute, MB of solute is (a) 300 g mol-1 (b) 350 g mol-1 (c) 200 g mol-1 (d) 250 g mol-1
Answer» tion:According to the equation, 10g per dm 3 of urea is isotonic with 5% solution of NON VOLATILE SOLUTE. Therefore, Molar CONC. of 5% non volatile solute= Mol wt. of non volatile soute50g/dm 3 M50 MSince we know that both solutions are isotoic to each other, hence,61 = m5 ; where m=50×6=300g/mol.