Solutions Question 2

Question: Which of the following salt has the same value of Van’t Hoff factor $ i $ as that of $ K_3[Fe{{(CN)}_6}] $ [CBSE PMT 1994; AIIMS 1998]

Options:

A) $ Al_2{{(SO_4)}_3} $

B) $ NaCl $

C) $ Na_2SO_4 $

D) $ Al{{(NO_3)}_3} $

Show Answer

Answer:

Correct Answer: A

Solution:

$ K_4[Fe{{(CN)}_6}] $ dissociates as $ 4{K^{+}}+{{[Fe{{(CN)}_6}]}^{4-}}, $ thus 1 molecule dissociates into five particles in the similar way $ Al_2{{(SO_4)}_3} $ also gives five particles per molecule.



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