If `BaCl_(2)` ionizes to an extent of 80% in aqueous solution,the value of van't Hoff factor is

Options

A. 2.6
B. 0.4
C. 0.8
D. 2.4

Answer

(a)

Explanation

`BaCl_(2) overset(H_(2)O)to Ba^(2+)+2CI^(-)`  
`therefore i = ("No.of moles after reaction")/("Initial number of moles")`
  = `((1-0.8) +0.8+(2 xx 0.8))/(1)`
=2.6