Question

the freezing point of 0.1 M NaCl solution is-------- than that of 0.1M MgCl2 solution

a) less than
b) more than
c) equal to
d) none of the above ​

Answer 1

none of the above ........

Answer 2

The freezing point of 0.1 M NaCl is more than that of 0.1 M MgCl₂ solution.

• The depression in freezing point is a colligative property.
• It is defined as the decrease in the freezing point of a solution when a non-volatile solute is added to it.
• The depression in freezing point is more in MgCl₂ solution as its Van't Hoff factor(i) is 2 while for NaCl is 1.
• So the freezing point of NaCl is greater than that of MgCl₂.