STANDARDChemistry-Solutions
STANDARD Chemistry Colligative Properties MCQ Question
Type: MCQ-numerical-Medium-Class 12
A 5% solution of cane sugar (Mol. wt. = 342) is isotonic with 1% solution of substance X. The molecular weight of X is
A
171.2
B
68.4
C
34.2
D
136.2
Correct Answer
Option B
Detailed Explanation
Since the solutions are isotonic, their molar concentrations are equal. Solving 5/342 = 1/x gives x = 68.4.
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