Molarity Practice Problems

1) How many grams of potassium carbonate are needed to make 200 mL of a 2.5 M solution?

2) How many liters of 4 M solution can be made using 100 grams of lithium bromide?

3) What is the concentration of a 450 mL solution that contains 200 grams of iron (II) chloride?

4) How many grams of ammonium sulfate are needed to make a 0.25 M solution at a concentration of 6 M?

5) What is the concentration of a solution that has a volume of 2.5 L and contains 660 grams of calcium phosphate?

6) How many grams of copper (II) fluoride are needed to make 6.7 liters of a 1.2 M solution?

7) How many liters of 0.88 M solution can be made with 25.5 grams of lithium fluoride?

8) What is the concentration of a solution that with a volume of 660 that contains 33.4 grams of aluminum acetate?

9) How many liters of 0.75 M solution can be made using 75 grams of lead (II) oxide?

10) How many grams of manganese (IV) oxide are needed to make a 5.6 liters of a 2.1 M solution?

11) What is the concentration of a solution with a volume of 9 mL that contains 2 grams of iron (III) hydroxide?

12) How many liters of 3.4 M solution can be made using 78 grams of isopropanol (C_{3}H_{8}O)?

13) What is the concentration of a solution with a volume of 3.3 mL that contains 12 grams of ammonium sulfite?

Molarity Practice Problems – Answer Key

1) How many grams of potassium carbonate are needed to make 200 mL of a 2.5 M solution? **69.1 grams**

2) How many liters of water are needed to make a 4 M solution using 100 grams of lithium bromide?** 3.47 L**

3) What is the concentration of a solution that contains 450 mL of water and 200 grams of iron (II) chloride? **3.51 M**

4) How many grams of ammonium sulfate are needed to make a 0.25 M solution at a concentration of 6 M? **171.2 grams**

5) What is the concentration of a solution that contains 2.5 L of solvent and 660 grams of calcium phosphate?** 0.85 M**

6) How many grams of copper (II) fluoride are needed to make 6.7 liters of a 1.2 M solution? **1081.4 grams**

7) How many liters of solvent are required to make a 0.88 M solution using 25.5 grams of lithium fluoride?** 1.11 L**

8) What is the concentration of a solution that contains 660 mL of solvent and 33.4 grams of aluminum acetate? **0.25 M**

9) How many liters of water are needed to make a 0.75 M solution using 75 grams of lead (II) oxide? **12.6 grams**

10) How many grams of manganese (IV) oxide are needed to make a 5.6 liters of a 2.1 M solution? **1021.9 grams**

11) What is the concentration of a solution that contains 9 mL of solvent and 2 grams of iron (III) hydroxide? **2.08 M**

12) How many liters of water are required to make a 3.4 M solution using 78 grams of isopropanol (C_{3}H_{8}O)? **0.41 L**

13) What is the concentration of a solution containing 3.3 mL of solvent and 12 grams of ammonium sulfite? **31.3 M**