Which one of the following electrolytes has the same value of van't Hoff factor (i) as that of Al2(SO4)3 (if all are 100% ionised)?
Explanation
Ai2(SO4)3 ⇌ 2Al+3 + 3SO42–
van't Hoff factor, i = 5
K2SO4 ⇌ 2K+ + SO42–
van't Hoff factor, i = 3
K3[Fe(CN)6] ⇌ 3K+ + [Fe(CN)6]2-
van't Hoff factor, i = 4
Al(NO3)3 ⇌ Al3+ + 3NO3–
van't Hoff factor, i = 4
K4[Fe(CN)6] ⇌ 4K+ + [Fe(CN)6]4–
van't Hoff factor, i = 5