Question

13. Which one of
hich one of the following electrolytes has the
me value of van't Hoff's factor (i) as that of
Al(SO4)2 (if all are 100% ionised)? TAIPMT-2015
(1) K,[Fe(CN)]
(2) K,SO
(3) K3[Fe(CN)2] (4) Al(NO2)
of the following n 10 manueous solutions which​

Answer 1

hiiii

Let's check Van't Haff factor for each option.

Al(No3)3 -> Al3+ + 3(No3)-, i = 4

K4[ Fe (CN)6] -> 4K+ + [ Fe (CN)6]4-, i = 5

K2So4 -> 2K+ + So42-, i=3

K4[Fe (CN)6] -> 3K+ + [Fe (CN)6]3-, i = 4

Al2(So4)3 -> 2Al3+ + 3 So42-, i = 5

Clearly, answer is K4[Fe(CN)6]

Option 1)

Al(NO3)3

this is the incorrect option

Option 2)

K4[Fe(CN)6]

this is the correct option

Option 3)

K2SO4

this is the incorrect option

Option 4)

K3[Fe(CN)6]

this is the incorrect option

Answer 2

Answer:

option 3 is the correct answer.