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WorksheetsSolutions Unit Quiz
Total questions: 20
Worksheet time: 1hrs 9mins
Which of the following is a homogeneous mixture?
Colloid
Suspension
Solution
None of the above
In a 2-Liter bottle of soda, which is the solvent?
The sugar
The CO2 gas
The water
The bottle
What is the molarity of 6.0 moles of MgF2 in 3.0 Liters of solution?
0.5 M
2.0 M
3.0 M
6.0 M
Heating a solvent will __________ the time it takes for a solid solute to dissolve due to ____________________ of the solvent.
Increase; increased kinetic energy
Decrease; increased kinetic energy
Increase; decreased kinetic energy
Decrease; decreased kinetic energy
How many moles of KMnO4 are in 0.250 L of a 1.35 M solution?
0.338 moles
540 moles
0.185 moles
1.35 moles
Which of these actions will cause MORE sugar to dissolve in a saturated sugar water solution?
Add more sugar while stirring
Add more sugar while heating the solution
Grind the sugar to a powder before adding to the solution
All of the above
What is the molarity of 6.73 grams of Na2CO3 dissolved in 0.250L of water? Molar mass of Na2CO3 is 106 g.
26.9 M
0.037 M
3.94 M
0.254 M
The process of surrounding solute particles with solvent particles is called .
solvation
salvation
solventing
mixing
A small amount of solid potassium chloride is shaken vigorously in a test tube of water until no further change occurs. Some of the solid potassium chloride dissolved, but some is left undissolved. The resulting solution is:
unsaturated
saturated
supersaturated
a colloid
How can you increase the molarity of a solution?
add solute
add solvent
pour out some of the solution
all of the above
The ratio of the number of solute particles to the volume of solution is the ________ .
mole ratio
molity
molarity
saturation
How many moles of LiCl must be dissolved into 100 mL of water to create a 0.5 M solution?
50
.05
200
0.005
If you dilute a 6 M solution of NaOH to prepare 250 mL of 0.3 M solution, how much of the stock solution will you use?
12.5 mL
5.0 mL
138.88 mL
5, 000 mL
How many grams of KNO3 must be dissolved to make 0.5 Liters of a 3 M solution? Molar mass of KNO3 is 101 g/mol.
151.5
0.0297
303.3
16.85
How many milliliters of a 12 M HCl solution would you use if you wanted to prepare 250 mL of a 0.5 M HCl dilute?
1.5
0.0104
15 000
10.42
When 50 grams of potassium chloride, KCl, is dissolved in 100 grams of water at 50 oC, the solution can be correctly described as:
unsaturated
saturated
supersaturated
none of the above
Which solution will be unsaturated when 70 grams is dissolved in 100 g of water at 10 oC?
Ce2(SO4)3
NaNO3
KCl
CaCL2
Which substance is least soluble at 0 oC?
NaNO3
NaCl
KCl
KClO3
gHow many grams of undissolved salt are in a beaker containing 80 g of Pb(NO3)2 in 100 g of water at a temperature of 30 oC?
14 g
0
80 g
20 g
Which substance is a gas?
KClO3
CaCl2
Ce2(SO4)3
NaNO3
