question_answer 64)

  In comparison to a ?0.01 M solution of glucose, the depression in freezing point of a 0.01 M MgCl2 solution is.......... (a) the same                      (b) about twice (c) about three times                     (d) about six times

Answer:

                  (c) As we know depression in freezing point is directly related to van't Hoff factor (/) according to which greater the value of i greater will be the depression in freezing point.

Solution	i
0.01 M glucose 0.01 MMgCI2	1 3

    Hence, depression in freezing point of glucose is about 3 times of glucose.