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In comparison to a 0.01 M solution of glucose, the depression in freezing point of a 0.01 M MgCl_2 solution is _____________.

(i) the same

(ii) about twice

(iii) about three times

(iv) about six times

Answers (1)

The answer is the option (iii). Colligative properties only depend on the number of solute. While 0.01 M solution of glucose does not ionize, 0.01 M MgCl_2solution ionizes to produce a single Mg^{2+}ion and 2 Cl^{-} ions.

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