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  • (a) Out of molal aqueous solution of glucose and molal aqueous    

(a) Out of 0.1 molal aqueous solution of glucose and 0.1 molal aqueous          solution of KCl, which one will have higher boiling point and why ?

(b) Predict whether van’t Hoff factor,(i) is less than one or greater than one in the following :

(i) CH_{3}COOH dissolved in water

(ii) CH_{3}COOH dissolved in benzene

 

 

 

 
 
 
 
 

Answers (1)

best_answer

(a) 0.1 molal aq. solution of KCl shows higher boiling point because its 1 mole dissociates into 2 moles of ions.

             \underset{1}{KCl}\rightarrow \underset{2moles}{K^{+}+Cl^{-}}

      whereas Glucose remains as such without any dissociation.

(b)

(i) i> 1                  (ii) i< 1

Posted by

Sumit Saini

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