Question

Which of the following will have same value of van’t Hoff factor as that of $K_{4}\lbrack Fe(CN)_{6}\rbrack?$

• A. $Al_{2}(SO_{4})_{3}$
• B. $AlCl_{3}$
• C. $Al(NO_{3})_{3}$
• D. $Al(OH)_{3}$

Answer 1

Answer: (A)

$Al_{2}(SO_{4})_{3}$

Answer 2

$K_{4}\lbrack Fe(CN)_{6}\rbrack \rightarrow 4K^{+} + \lbrack Fe(CN)_{6}\rbrack^{4 -}$

$Al_{2}(SO_{4})_{3} \rightarrow 2Al^{3 +} + 3SO_{4}^{2 -}$