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Worksheets

Expressing Concentration

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Calculate the molarity of a solution containing 0.5 moles of solute in 2 liters of solution.

a)

1 M

b)

0.25 M

c)

0.1 M

d)

2.5 M

2.

Determine the percent by mass of a solution that contains 25 grams of solute and 150 grams of solvent.

a)

10%

b)

50%

c)

75%

d)

14.29%

3.

What is the molality of a solution that contains 30 grams of solute and 500 grams of solvent?

a)

0.15 m

b)

0.3 m

c)

0.5 m

d)

0.06 m

4.

Calculate the parts per million (ppm) of a solution that contains 0.02 grams of solute in 5000 grams of solution.

a)

0.0004 ppm

b)

40 ppm

c)

0.004 ppm

d)

4 ppm

5.

If a solution has a molarity of 0.25 M and a volume of 2 liters, how many moles of solute are present?

a)

2.5 moles

b)

0.025 moles

c)

1.5 moles

d)

0.5 moles

6.

Find the percent by mass of a solution that contains 40 grams of solute and 300 grams of solvent.

a)

11.76%

b)

2.5%

c)

25%

d)

60%

7.

What is the molality of a solution that contains 50 grams of solute and 1000 grams of solvent?

a)

0.05 m

b)

50 m

c)

0.5 m

d)

0.005 m

8.

Determine the parts per million (ppm) of a solution that contains 0.05 grams of solute in 10000 grams of solution.

a)

50 ppm

b)

0.005 ppm

c)

5 ppm

d)

0.5 ppm

9.

If a solution has a molarity of 0.5 M and a volume of 1 liter, how many moles of solute are present?

a)

2 moles

b)

1 mole

c)

0.5 moles

d)

0.05 moles

10.

Calculate the percent by mass of a solution that contains 60 grams of solute and 200 grams of solvent.

a)

35.5%

b)

23.08%

c)

50%

d)

10.2%