Question

3. Which one of the following electrolytes has the same value
of van't Hoff factor (i) as that of Al(SO4)3 (if all are 100%
ionised)?
(a) Al(NO3)3 (b) K [Fe(CN)
(c) K2SO4
(d) K [Fe(CN)21 (A.I.P.M.T. 2015)​

Answer 1

Answer:

(a) Al(NO3)3

Explanation:

Al(NO3)3 = Al3+ 3NO3-

So, i = 1+3 = 4

and

Al(SO4)3 = Al3+ + 3SO4^2-

i = 1+3 = 4