Question

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

	1.	0.16 m	CrCl2		A.	Highest boiling point
	2.	0.13 m	Cr(NO3)3		B.	Second highest boiling point
	3.	0.15 m	MnCl2		C.	Third highest boiling point
	4.	0.43 m	Glucose(nonelectrolyte)		D.	Lowest boiling point

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

	1.	0.11 m	Cr(CH3COO)3		A.	Highest boiling point
	2.	0.24 m	CuSO4		B.	Second highest boiling point
	3.	0.14 m	(NH4)2SO4		C.	Third highest boiling point
	4.	0.39 m	Sucrose(nonelectrolyte)		D.	Lowest boiling point

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

	1.	0.13 m	NiI2		A.	Lowest freezing point
	2.	0.22 m	KI		B.	Second lowest freezing point
	3.	0.14 m	BaBr2		C.	Third lowest freezing point
	4.	0.35 m	Sucrose(nonelectrolyte)		D.	Highest freezing point

4.
Match the following aqueous solutions with the appropriate letter from the column on the right.

	1.	0.19 m	BaI2		A.	Lowest freezing point
	2.	0.25 m	KNO3		B.	Second lowest freezing point
	3.	0.20 m	Na2S		C.	Third lowest freezing point
	4.	0.53 m	Glucose(nonelectrolyte)		D.	Highest freezing point

Answer 1

boiling point and freezing point depends upon the concentration of the solute in them (actually depend upon the number of ions(or any species) in it.) Such property which depends only on the number of species in it is known as colligative property.

As the number of species increases, freezing point lowers, and boiling point elevates.

Then,

1.  

0.16 m CrCl₂ : CrCl₂  willl yield 3 ions
0.16 * 3 = 0.48  (second highest number) --- second highest boiling point

0.13 m Cr(NO₃)₃ : Cr(NO₃)₃ willl yield 4 ions

0.13 * 4 = 0.52 (highest number) --- highest boiling point

0.15 m MnCl₂ : MnCl₂willl yield 3 ions

0.15 * 3 = 0.45 (third highest number) --- third highest boiling point

0.43 m  Glucose : it does not splits, so yield only one species(gloucose molecule)

0.43 * 1 = 0.43 (lowest number) --- lowest boiling point

2.

Like what we did before,

3.

For freezing point, higher the number lower will be the freezing point

4.