solution having minimum boiling pointis?

1) 0.1M C6H12O6

2) 0.1M CaCl2

3) 0.1M NaCl

4) 0.5M AlCl3

The correct option is (1). It can be explained on the basis of Elevation in boiling point and van't hoff factor. Van't Hoff factor is given by

= Total number of ions after dissociation/associationTotal number of ions before dissociation/association

(i) Glucose does not dissociate into ions. So, its "i" will be 1.

(ii) CaCl2 dissociate as
CaCl2  →  Ca2+  +  2Cl-
So, i = 3

(iii) NaCl dissociate as
NaCl → Na+  +  Cl-
So, i = 2

(iv) AlCl3 dissociate as
AlCl3  → Al3+  +  3Cl-
So, i = 4
"i" is directly proportional to elevation in boiling point. It means the elevation in boiling point is less in Glucose. It means it has minimum boiling point.
 

  • 24
What are you looking for?