A solution containing 8.6 g urea in one litre was found to be isotonic with a 5% (wt./vol.) solution of an organic non-volatile solute. The molecular weight of latter is:

Question

A solution containing 8.6 g urea in one litre was found to be isotonic with a 5% (wt./vol.) solution of an organic non-volatile solute. The molecular weight of latter is: (A) 348.9 (B) 34.89 (C) 3489 (D) 861.2

Tardigrade Admin · Accepted Answer

For two non-electrolytic solutions if isotonic C1 = C2 ∴ (8.6/60 × 1)= (5× 1000/m × 100) ∴ m= 348.9

Q. A solution containing 8.6 g urea in one litre was found to be isotonic with a 5% (wt./vol.) solution of an organic non-volatile solute. The molecular weight of latter is:

$348.9$

$34.89$

$3489$

$861.2$

For two non-electrolytic solutions if isotonic $C_{1} = C_{2}$
$∴ \frac{8.6}{60 \times 1} = \frac{5 \times 1000}{m \times 100}$
$∴ m = 348.9$

Q. A solution containing 8.6 g urea in one litre was found to be isotonic with a 5% (wt./vol.) solution of an organic non-volatile solute. The molecular weight of latter is:

348.9

34.89

3489

861.2

For two non-electrolytic solutions if isotonic C1​=C2​ ∴60×18.6​=m×1005×1000​ ∴m=348.9

$348.9$

$34.89$

$3489$

$861.2$

For two non-electrolytic solutions if isotonic $C_{1} = C_{2}$
$∴ \frac{8.6}{60 \times 1} = \frac{5 \times 1000}{m \times 100}$
$∴ m = 348.9$