Question

What is the vant hoff factor of potash alum

Answer 1

In the case of dissociation we use that formula of van't Hoff factor

Answer 2

Answer: The Van't Hoff factor of Potash alum is 8.

Explanation:

Van't Hoff factor of a salt is defined as the total number of ions that are formed after complete dissociation of a salt . Potash alum is the double salt of potassium sulfate and aluminium sulfate having formula $K_2SO_4.Al_2(SO_4)_3.24H_2O$.

The dissociation of potash alum is given by the equation:

$K_2SO_4.Al_2(SO_4)_3.24H_2O\rightarrow 2K^++2Al^{3-}+4SO_4^{2-}+24H_2O$

The number of ions formed are 8.

Hence, the Van't Hoff factor of Potash alum is 8.