Question

Why elevation of boiling point of 1M KCl solution is nearly double than that of 1M sugar solution?

Answer 1

Dear Student

As the elevation of boiling point is the colligative property and depends upon the number of dissociated molecules of the solute. Hence
As the glucose is non volatile while KCl is volatile
In case of 1 M of glucose and KCl solutions, CRT is same but i is different.
For glucose, i= 1 but for KCl, i=2
Therefore, they both will have different osmotic pressure and different colligative property.

So, the elevation in boiling point for KCl is nearly double of glucose

Regards