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Solution


Q.

The van’t Hoff factor (i) for a dilute aqueous solution of the strong electrolyte barium hydroxide is              [2016]
1 0  
2 1  
3 2  
4 3  

Ans.

(4)

Being a strong electrolyte, Ba(OH)2 undergoes 100% dissociation in a dilute aqueous solution,

             Ba(OH)2(aq) ⟶ Ba(aq)2++2OH(aq)-

Thus, van’t Hoff factor i=3