1.

In comparison to a 0.01 M solution of glucose, the depression in freezing point of a 0.01 M MgCl_(2) solution is …….

Answer»

the same
about twice
about three TIMES
about six times

SOLUTION :Explanation : Depression in freezing point is a colligative property. In case of `MgCl_(2)` value of van.t. HOFF factor will be more.
No. of ions yielded when a molecule of `MgCl_(2)` gets DISSOCIATED in its aqueous solution is = 3. THUS one molecule of 0.01 M `MgCl_(2)` given out three particles / ions in solution, thereby increasing the number of particles present in its solution to three times.
It is because of this that depression in freezing point of 0.01 M `MgCl_(2)` will be three times as compared to that of 0.01 M - glucose solution, where no dissociation of the molecule takes place.


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