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  4. A 5 % solution of cane sugar (molar mass =342 ) is isotonic with 1 % solution of a substance X. The molar mass of X is

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Q. A $5 \%$ solution of cane sugar (molar mass $=342$ ) is isotonic with $1 \%$ solution of a substance $X$. The molar mass of $X$ is

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Solution:

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Or, $MX =\frac{1}{5} X 342=68.4$