Use the solubility curve provided on the right to determine the answers to the following
questions:
6. How many grams of solute are
required to saturate 100 g of water in
each of the following solutions?
a) KCl at 80°C
b) KClO3 at 90°C
c) NaNO3 at 10°C
d) SO2 at 20°C
e) NH4Cl at 70°C
7. What is each of the solutions below:
saturated, unsaturated or
supersaturated? All of the solutes are
mixed with 100 g of water.
a. 40 g of NaCl at 50°C
b. 30 g of NH3 at 30°C
c. 70 g of HCl at 20°C
d. 80 g of KNO3 at 60°C
e. 80 g of NH4Cl at 80°C
8. How many grams of KNO3 per 100 g of water would be crystallized from a saturated
solution as the temperature drops from:
a. 80°C to 20°C
b. 60°C to 40°C
c. 50°C to 30°C
d. 80°C to 0°C
e. 50°C to 10°C
9. At what temperature are the following solutes equally soluble in 100 g of water?
a. NaNO3 and KNO3
b. NH4Cl and HCl
c. NH3 and KNO3
d. KClO3 and NaCl
10. Which three solutes show a decrease in solubility with increasing temperature?