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In comparison to a $0.01 \mathrm{M}$ solution of glucose, the depression freezing point of a $0.01 \mathrm{M} \mathrm{MgCl}_2$ solution is
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about three times
about three times
As we know depression in freezing point is directly related to van't Hoff factor $(i)$ according to which greater the value of $i$ greater will be the depression in freezing point.
$$
\begin{array}{|l|c|}
\hline \text { Solution } & \boldsymbol{i} \\
\hline 0.01 \mathrm{M} \text { glucose } & 1 \\
0.01 \mathrm{M} \mathrm{MgCl}_2 & 3 \\
\hline
\end{array}
$$
Hence, depression in freezing point of glucose is about 3 times of glucose.
$$
\begin{array}{|l|c|}
\hline \text { Solution } & \boldsymbol{i} \\
\hline 0.01 \mathrm{M} \text { glucose } & 1 \\
0.01 \mathrm{M} \mathrm{MgCl}_2 & 3 \\
\hline
\end{array}
$$
Hence, depression in freezing point of glucose is about 3 times of glucose.
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