Question

Find n factor of potash alum (K2SO4Al(SO4)3.24H2O) .

Answer 1

the n-factor of potash alum = total positive or negative charge of a salt = +1 x 2 ( charge of K ion )  +  2x(+3) ( charge of aluminium ion ) = 8

Answer 2

Answer : The 'n' factor of potash alum is, 8

Explanation :

When the potash alum undergoes dissociation in solution then it dissociated into their ions.

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

The n-factor of potash alum = Total number of negative and positive ions

The n-factor of potash alum = $2K^++4SO_4^{2-}+2Al^{3+}=2+4+2=8$

Therefore, the 'n' factor of potash alum is, 8