Font size
WorksheetsUnit 9 Exam Test Corrections
Total questions: 25
Worksheet time: 32mins
Which unit listed below is used to measure solution concentration in chemistry?
Electronegativity
Molarity
Solubility
Concentrations
What is the molarity of 5.60 mol of sodium carbonate in 1.500 L of solution?
0.37 M
3.7 M
5.6 M
270 M
For each scenario, determine the impact on the solubility of the substance by indicating whether it will increase, decrease, or have no effect.
breaking a solute into smaller pieces
raising the temperature of a solvent
stirring a solute slowly
When two liquids will dissolve in each other, they are said to be (a) . Oil and water are examples of two liquids which are (b) in each other.
(a) is known as the "universal solvent." It is a (b) molecule which allows for the formation of (c) bonds. Water does not interact with (d) molecules, like fats and oils.
Molarity is ...
grams of solute/deciliters of solvent.
grams of solute/liters of solution.
moles of solute/liters of solution.
moles of solute/milliliters of solvent.
What volume of 5.00 M KI stock solution is needed to make 250. mL of a 1.50 M solution? Use M1V1=M2V2
0.0300 mL
33.3 mL
75.0 mL
833 mL
If a small amount of solute is dissolved in a solution, the solution would be called
Soulte
Concentration
Dilute
Solvent
Pressure has no effect on the solubility of ___ solutes.
Moles
Gas
Liquids
Dilutes
The (a) is the dissolved particles in the solution. The (b) is the dissolving medium in the solution.
What volume of 0.125 M KMnO4 is required to yield 0.180 mol of potassium permanganate, KMnO4?
0.694 L
22.5 L
0.0203 L
1.44 L
What is the molarity of a solution containing 2.50 mol of solute in 5.00 L of solution?
5.00 M
2.50 M
1.25 M
0.50 M
If I have 240 mL of a 5 M NaBr solution, what will the concentration be if I add 160 mL more water to it?
4.25 M
3.0 M
7.5 M
1.76 M
How do we make a dilution?
Add more solute
Remove solute
Remove solvent
Add more solvent
How many moles of solute are present in 2.0 L of a 0.5 M solution?
4.0 moles
0.5 moles
1.0 moles
2.0 moles
The component of the solution that is dissolved in the solvent (usually present in lesser quantity) is called (a)
A gas will become _________________________soluble in water as temperature increases.
more
less
equally
Solubility refers to the ____ of solute that can dissolve in a certain volume or mass of solvent, at a certain temperature.
Mean
Range
Amount
Mode
Which of the following is a method to increase the rate of dissolution of a solute in a solvent?
Decreasing the temperature
Stirring the solution
Adding more solute
Using a larger container
What is the molarity of a solution prepared by dissolving 10.0 g of NaCl in enough water to make 500 mL of solution? (Molar mass of NaCl = 58.44 g/mol)
0.342 M
0.684 M
0.171 M
1.368 M
How many liters of a 0.250 M HCl solution are needed to completely react with 0.500 mol of NaOH?
0.250 L
0.500 L
2.00 L
1.00 L
If 500 mL of a 2.0 M solution is diluted to 1.0 L, what is the new concentration?
4.0 M
2.0 M
0.5 M
1.0 M
