Worksheet'- Coltigative Properties
Name
1. A property that depends on the number of solute particles (concentration) is
said to bea
r£/lUQCm(& -property.
2. List^ examples of colligative properties: _.
a)
IjtUfr
fy?QiHj&
b)
_
_
3. The pressure of a^vapor in J?^7,U uflvQiAwrrh its liquid is referred to as
vapor pressure. It is a measure^f the tendency of the molecules of a liquid to
escape into the
QQ*^
phase.
4. The boiling point of a liquid is the temperature at which its
is equal to
\/CL$)/\/
5., When a solid is dissolved in a liquid, the vapor pressure of the liquid is
(XM. £\e the surface area from which molecules can evaporate
is reduced.
6. What colligative property is responsible for antifreeze keeping water from
freezing in a car's cooling system? -jr&fanw? 7>t
7. What colligative property is responsible for antifreeze keeping water from
boiling over during the summer in a car's cooling system?
8. What colligative property causes ice to melt on the street after salt has been
spread on it? ^g-Q-fW Yt.
1. The depression of the freezing point is dependent on
li-The nature of the solute
2] The concentration of dissolved particles
2.
3
3) Hydrogen bonding
4) The formula of the solute
When a solute is dissolved in water, the effect on the boiling and the freezing point depends largely
on
1) Nature of the solute
3) The number of dissolved particles
2) The formula mass of the solute
4) The density of the solute
3. As a solute is added to a solvent, what happen; to the freezing point and the boiling point of the
solution?
1) The freezing point decreases and the boiling point decreases
2) The freezing point decreases and the boiling point increases
3} The freezing point increases and the boiling point decreases
4) The freezing point increases and the boiling point increases
4.
3.
What occurs as a salt dissolves in water?
1) The number of ions in the solution decreases, and the freezing point decreases
2) The number of ions in the solution decreases, and the freezing point increases
3} The number of ions in the solution increases, and the freezing point decreases
4) The number of ions in the solution increases, and the freezing point increases
5.
Higher freezing point and a lower boiling point than water
Higher freezing point and a higher boiling point than water
Lower freezing point and a higher boiling point than water
Lower freezing point and a lower boiling point than water
3
6. As ethyleneglycol (Antifreeze) is added to water, the boiling point of the water is
1) Elevated, and the freezing point is depressed
2) Elevated, and the freezing point is elevated
3) Depressed, and the freezing point is depressed
4) Depressed, and the freezing point is elevated
7
When a 1M solution of aqueous solution is diluted with water, the freezing point of the water
1} Decreases and the boiling point decreases
2) Decreases and the boiling point increases
3) Increases and the boiling point decreases
4) Increases and the boiling point increases
2.
As water is added to a solution, the number of dissolved ions in the solution
1) Increases, and the concentration of the solution remains the same
2} Decreases, and the concentration of the solution increases
3) Remains the same, and the concentration of the solution decreases
4) Remains the same, and the concentration of the solution remains the same
3
9. Which solute, when added to 1000 grams of water, will produce a solution with the highest boiling
point?
1) 29gofNaCi
3}31g ofC 2 H 6 0 3
2) 58 g of NaC!
4) 62 g of C2H602
10. Which of the given solutes dissolved in 1000 g of H20 will produce a solution with the lowest freezing
temperature?
1)
10 g of Li2S04
3) 10 g of Ag2SO4
2} IGgofSrSO,
4)10gofBaS0 4
When sugar is dissolved in water, the resulting solution compared to pure water
(B)
(D)
has a higher freezing point
has a lower osmotic pressure
(A)
(C)
has a higher boiling point
has a higher vapor pressure
1.2,,
The addition of anon-volatile solute to water will always
(A)
(C)
(D)
(E)
increase the boiling point.
increase the temperature of the solution.
16.
Which of the following aqueous solutions would have the lowest total vapor pressure at 25 °C?
(A)
3MNaOH
14:
A 0.1 M aqueous solution is made of each of the substances listed. Which would have the
lowest freezing point?
(A)
K2S04
15
Which aqueous solution has the smallest freezing point depression?
(AJ
(B)
0.2 m Ca(NO3)2
0.2 m CH3OH
(B)
increase the freezing point.
increase the vapor pressure at a specific temperature.
increase the total volume relative to the sum of the volumes of the components.
(B)
(B)
3MNH3
Na3P04
(C)
(D)
(C)
(C)
3 M CaCl2
CaCl2
(D)
(D)
3Methanol
NaCl
0.2 m MgSO4
0.2 m K3PO4
Which of the following aqueous solutions will have the lowest freezing point?
1.0MCaSO
M (NHto
4)3PO
4
(A) is0.75
f\n Nad
added
water,
the(B)solution
will4 have a(C)
(D)
1.5MCH 3 OH
(E)
1.25MNaCl
l.OMLiClO: