Name:_________________________________________ Date:_____________________ Period:____________
Solubility Curve Practice
Directions: Answer in complete sentences and show all work for calculations.
1. What relationship exists
between solubility and
temperature for most of the
substances shown?
2. What is the exception?
3. What explains why solids become more soluble as temperature increases and why gases become less
soluble? Use the following words to help justify your response: temperature, collisions and energy.
4. Which is more soluble NaNO3 or KCl? Does the temperature matter? Why or why not?
5. How does the line drawn for a particular substance relate to the saturation of a solution of that
substance? Use the following words to help justify your response: saturated, unsaturated, supersaturated.
6. How many grams of NH4Cl will dissolve in 100. grams of water at 90.°C?
7. How many grams of KClO3 will dissolve in 300. grams of water at 30.°C?
8. How would you make a saturated solution of KNO3 at 60. °C in 50. grams of water?
9. If you were asked to make a saturated solution of KCl in 100. grams of water, what other piece of
information would you need to before you could start? Why?
10. If you start with a saturated solution of NH3 in 100. grams of water at 10. °C, how many grams of NH3
gas would bubble out of solution if you raise the temperature to 80. °C?
11. A saturated solution of NaNO3 was made with 300. grams of water at 40. °C. How much NaNO3
could be recovered by evaporating the solution to dryness?
12. A saturated solution KNO3 in 400. grams of water at 50. °C is cooled to 10. °C. How much KNO3 will
come out of solution as crystals?
13. You start with 200. grams of ice saturated with SO2 at 0. °C. How many grams of SO2 will bubble out
of solution if you melt the ice and raise the temperature of the water to 80. °C?