Question

Which of the following aqueous solution has osmotic pressure nearest to that of an equimolar solution of $K_4\left[Fe\right(CN{)}_6]$?

• A. $N{a}_{2}S{O}_4$
• B. $BaC{l}_2$
• C. $A{l}_2(S{O}_4{)}_3$
• D. $C_{12}{H}_{22}{O}_{11}$

Answer 1

The correct option is C

$A{l}_2(S{O}_4{)}_3$

If the solutions are equimolar then colligative properties will depend only on van’t Hoff factor.

For $K_4\left[Fe\right(CN{)}_6]$, i = 5

$N{a}_{2}S{O}_4$, i = 3

$BaC{l}_2$, i = 3

$A{l}_2(S{O}_4{)}_3$, i = 5

$C_{12}{H}_{22}{O}_{11}$, i = 1