Question

Match the following aqueous solutions with the appropriate letter from the column on the right.

	1.	0.15 m	MgCl2		A.	Highest boiling point
	2.	0.16 m	(NH4)2CO3		B.	Second highest boiling point
	3.	0.13 m	CoBr2		C.	Third highest boiling point
	4.	0.42 m	Glucose(nonelectrolyte)		D.	Lowest boiling point

Answer 1

answer :

A ) Highest boiling point ------------------->  (NH4)2CO3

B) Second highest boiling point ----------------> MgCl2

C ) Third highest boiling point --------------> glucose

D ) Lowest boiling point -------------------->CoBr2

explanation:

1 ) for MgCl2 = i x m = 3 x 0.15 = 0.45 m

2) for (NH4)2CO3 = i x m = 3 x 0.16 = 0.48 m

3) for CoBr2 = i x m = 3 x 0.13 = 0.39 m

4 ) glucose = i x m = 1 x 0.42 m

here i = number of ions . more value more boiling point from the formula :

delta Tf = kf x i x m