Answer :

(a) 0.1 molal aqueous solution of KCl will have higher boiling point because KCl dissociates in aqueous solution to give K+ and Cl- ions, but glucose does not dissociate and elevation in boiling point is a colligative property, i.e., it depends upon the no. of atoms. So, KCl will have higher B.P.


(b)


i. i>1


When CH3COOH is dissolved in water, it dissociates into ions. In case of dissociation, van’t Hoff factor(i) is greater than 1


ii. i<1


When CH3COOH is dissolved in benzene, it associates to form a dimer. In case of association, van’t Hoff factor(i) is less than 1


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