Solution Concentration



Unit 1C Worksheet 4 Name _________________

Solution Concentration

1. One teaspoon of sucrose is dissolved in a cup of water. Identify

a. the solute b. the solvent

2. What is the concentration of these solutions expressed as percent by mass?

a. 17 g sucrose dissolved in 183 g water

b. 30.0 g sucrose dissolved in 300 g water

3. What is the concentration of these solutions expressed as ppm?

a. 17 g sucrose dissolved in 183 g water?

b. 0.0020 g iron (II) ions dissolved in 500 g water

4. What is the concentration of these solutions expressed as ppb?

a. 0.000045 g mercury (II) ions dissolved in 850 g water

b. a solution containing 35 mcg/L aluminum

5. A saturated solution of potassium chloride is prepared by dissolving 45 g KCl in 100 g

water at 60°C.

a. What is the concentration of this solution as percent by mass?

b. What would be the new concentration if 155 g water was added?

6. Bacardi Rum is 40% alcohol by mass. If you had 400 g of Bacardi, how many grams

of alcohol would be in the rum solution?

Use solubility curves to answer the following:

7. What mass of Li2SO4 can be dissolved in 75 g H2O at 50°C?

8. How much water is needed to completely dissolve 150 g NH4Cl at 75°C?

9. If 60 g of NaCl is mixed with 100 g water at 50°C, how much will not dissolve?

10. If 20 g CuSO4 is mixed with 100 g water at 40°C, how much more must be added to

saturate the solution?

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