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Worksheetscolligative properties
Total questions: 20
Worksheet time: 23mins
When CH3OH is dissolved in water, how many particles are in solution for each unit?
1
3
4
5
6
When KCl (potassium chloride) is dissolved in water, how many particles are in solution for each unit?
1
2
3
4
6
At the same concentration, which salt will have the largest effect on the freezing point?
C2H4O2
H2S
LiBr
CaF2
The graph above is a heating curve of water. Which number in the graph represents the process of freezing?
1
2
3
4
5
What type of substance dissolves in water but does not form ions or conduct electricity?
electrolyte
nonelectrolyte
saturated
insoluble
The van't Hoff factor measures the number of particles formed in solution. What is the van't Hoff factor for the compound Na2SO4?
1
3
5
7
Electrolytes have a greater effect on colligative properties than nonelectrolytes do because electrolytes
are volatile
have higher boiling points
produce fewer moles of solute particles per mole of solvent
produce more moles of solute particles per mole of solvent
Adding a nonvolatile solute to a liquid will ___.
depress both the freezing point and the boiling point
elevate both the freezing point and the boiling point
depress the freezing point and elevate the boiling point
elevate the freezing point and depress the boiling point
The weaker the intermolecular forces of a substance the _____________ the boiling point
higher
lower
At the same concentration, which of the following will elevate (increase) boiling point the most?
CH3OH
C6H12O6
KNO3
SrCl2
What mass of water is needed to dissolve 34.8 g of copper(II) sulfate in order to prepare a 0.521 m solution?
0.418
0.419
0.420
0.421
The vapor pressure of water at 20° C is 17.5 torr. What is the vapor pressure of water over a solution containing 300. g C6H12O6 and 455 g of water?
16.4 mm Hg
16.5 mm Hg
16.6 mm Hg
16.7 mm Hg
Calculate the freezing point of a solution made from 32.7 g of propane, C3H8, dissolved in 137.0 g of benzene, C6H6. The freezing point of benzene is 5.50° C and its Kf is 5.12° C/m.
-22.2° C
-22.3° C
-22.4° C
-22.5° C
Calculate the boiling point of a solution made from 227 g of MgCl2 dissolved in 700. g of water. What is the boiling point of the solution? Kb = 0.512° C/m.
105.24° C
105.34° C
105.44° C
105.54° C
A solution contains 21.6 g of a nonelectrolyte and 175 g of water. The water freezes at -7.18° C and Kf = 1.86° C/m. Is the nonelectrolyte CH3OH or C2H5OH?
CH3OH
C2H5OH
Find the molarity of each ion present after mixing 27 ml of 0.25 M HNO3 with 36 ml of 0.42 M Ca(NO3)2
(a)
Find the molarity of each ion present after mixing 35 ml of 0.42 M K2SO4 with 27 ml of 0.17M K3PO4.
(a)
