Unit 9 Test Review

Solutions

100

Solutions are known to be a special type of this, where it appears the same (uniform) throughout when it is viewed.

Homogeneous Mixture

200

What symbol can be used to represent a substance completely dissolved in water?

Aqueous (aq)

300

The substance that is performing dissolving action (larger part) is known as

The Solvent

400

The substance that is being dissolved (smaller part) is known as

The Solute

500

In a solution, what refers to the amount of a solute dissolved in a solvent.

Concentration

Percent Compositions of Solutions

100

A solution is made by dissolving 25 grams of salt in 100 grams of water. What is the percent composition of salt in the solution?

20 %

200

A 150-gram solution contains 30 grams of sugar. What is the percent composition of sugar in the solution?

20 %

300

If you dissolve 50 grams of NaCl in 450 grams of water, what is the percent composition of the solid in the solution?

10%

400

A bottle of sports drink contains 10 grams of electrolytes dissolved in 240 grams of water. Determine the percent composition of electrolytes in the drink.

4 %

500

A solution has a mass of 250 grams and is 12% sodium chloride by mass. How many grams of sodium chloride are in the solution?

30 g

Molarity

100

What is the molarity of a solution if 2 moles of solute are dissolved in 1 liter of solution?

2 M

200

Determine the molarity of a solution in which 0.25 moles of solute is dissolved in 0.5 liters of solution.

0.5 M

300

You have 1.5 liters of a solution containing 3 moles of solute. What is the molarity of this solution?

2 M

400

If you dissolve 1 mole of solute in 100 mL of solution, what is the molarity? (Hint: Remember to convert mL to liters)

10 M

500

You need to prepare 250 mL of a 2 M solution. How many moles of solute will you need? (Hint: Remember to convert mL to liters)

0.5 M

Dilution

100

You dilute 200 mL of a 10 M NaOH solution to a final volume of 1 L. What is the final molarity of the NaOH solution?

M₂ = 2 M

200

You have 500 mL of a 6 M HCl solution. How much of this solution would you need to dilute to obtain a 1.5 M HCl solution?

V2 = 2,000 mL

300

How many mL of a 12 M H₂SO₄ solution are required to prepare 3 L of a 2 M H₂SO₄ solution?

V1 = 500 mL

400

If you have 100 mL of a 5 M KNO₃ solution, what will be the volume of the solution if it is diluted to a concentration of 0.5 M? Answer in liters (L).

V2 = 1 L

500

You mix 150 mL of a 3 M NaCl solution with 350 mL of water. What is the molarity of the resulting solution? Round to the nearest tenth.

1.3 M

Solubility

100

A solubility curve shows the relationship between

Solubility and Temperature

200

Each line on a solubility curve represents a different 

Solute

300

Using table G, How much KNO₃ is needed to make a saturated solution at 40 degrees Celsius?

63 g

400

Using Table G, if given 125 g of NaNO₃ in 100 g of water, determine what type of solution this will be at 30 degrees Celsius.

Supersaturated

500

If given 20 g of NH₄Cl in 100 g of water at 80 degrees Celsius, how much more solute needs to be added to make a saturated solution?

46 g