MCQ
A solution containing 8.6 g urea in 1 L was found to be isotonic with a 5% (mass/vol.) solution of an organic non-volatile solute. The molar mass of latter is:
- A3489
- B34.89
- C861.2
- ✓348.9
✓
Answer
Correct option: D.
348.9
(D)348.9
Explanation:
For two non-electrolyte solutions, if isotonic $C _1= C _2$
$\begin{array}{l}\therefore \frac{8.6}{60 \times 1}=\frac{5 \times 1000}{M_{w_2} \times 100} \\
M_{w_2}=348.83\end{array}$
Explanation:
For two non-electrolyte solutions, if isotonic $C _1= C _2$
$\begin{array}{l}\therefore \frac{8.6}{60 \times 1}=\frac{5 \times 1000}{M_{w_2} \times 100} \\
M_{w_2}=348.83\end{array}$
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