Question

We have three aqueous solution of NaCl labeled as ‘A’, ‘B’ and ‘C’ with concentration $0.1M,0.01$M and $0.001$M, respectively the value of van’t Hoff factor for these solution will be in the order.

• A. $i_{A} < i_{B} < i_{C}$
• B. $i_{A} > i_{B} > i_{C}$
• C. $i_{A} = i_{B} = i_{C}$
• D. $i_{A} < i_{B} > i_{C}$

Answer 1

Answer: (C)

$i_{A} = i_{B} = i_{C}$

Answer 2

As NaCl is a strong electrolyte, it undergoes dissociation completely. Thus van’t Hoff factor will be same for all these solutions, $i_{A} = i_{B} = i_{C}$