Solubility Curve Practice Problems Worksheet 1 Name Soliana Taye_ Period
Directions: Find the mass of solute will dissolve in 100mL of water at the following temperatures?
1. KNO3 at 70°C =

2. NaCl at 100°C=

3. NH4Cl at 90°C=

4. Which of the above three substances is most
soluble in water at 15°C. =

2. Solution
Saturated or Unsaturated?
If unsaturated: How much more solute can dissolve in the solution?
a solution that contains 70g of NaNO3 at 30°C (in 100 mL H2O)

a solution that contains 50g of NH4Cl at 50°C (in 100 mL H2O)

a solution that contains 40g of KClO3 at 80°C (in 100 mL H2O)

a solution that contains 35g of KI at 0° C (in 100 mL H2O)

3. a. What is the solubility of KCl at 5°C? b. What is the solubility of KCl at 25°C?
c. What is the solubility of Ce2(SO4)3 at 10°C? d. What is the solubility of Ce2(SO4)3 at 50°C?

4. At 90°C, you dissolved 10 g of KCl in 100. g of water. Is this solution saturated or unsaturated?

5. A mass of 100 g of NaNO3 is dissolved in 100 g of water at 80ºC.
a) Is the solution saturated or unsaturated?
b) As the solution is cooled, at what temperature should solid first appear in the solution? Explain.

6. Use the graph to answer the following two questions:
Which compound is most soluble at 20 ºC? Which is the least soluble at 40 ºC?