question_answer 73)

  We have three aqueous solutions of NaCI labelled as 'A', 'B' and 'C with concentrations 0.1 M, 0.01 M and 0.001 M, respectively. The value of van't Hoff factor for these solutions will be in the order.......... (a)                     (b)          (c)                     (d)

Answer:

                  (b) van't Hoff factor is the measurement of total number of ions present in the solution. Therefore, greater the concentration of solution greater will be its van't Hoff factor.

	Concentration NaCI
A	0.1 M	On moving top to bottom
B	0.01 M	+ Concentration decreases
C	0.001 M	+ Van't Hoff factory decreases