Reading A Solubility Chart (Page 4 of 4) in pdf

Reading A Solubility Chart Page 4

18. Are the following solutions saturated, unsaturated or supersaturated (assume that all three could form

supersaturated solutions)

a. 40. g of KCl in 100 mL of water at 80

b. 120. g of KNO

in 100 g of water at 60

c. 80. g of NaNO

in 100 mL of water at 10

160. g of NaNO

in 200 g of water at 20 C

19. What would happen if a saturated solution of potassium chloride, KCl, in 100g of water was cooled from

80°C to 40°C?

20. You start with a saturated solution of NH

in 100 mL of water at 10°C. How many grams of NH

gas would

bubble out of the solution if you raise the temperature to 80°C?

21. A saturated solution of KNO

in 400 grams of water at 50°C is cooled to 10°C. How much KNO

will come

out of the solution as crystals?

22. The salinity levels of the world’s oceans generally increase as you get closer to the equator and decrease

as you move away from the equator. Suggest an explanation for this phenomenon.

23. The above solubility curve represents the solubility of solids in a liquid as temperature increases. Would

you expect a solubility curve representing the solubility of gases in a liquid as temperature increase to

display the same trend? Why or why not?

Reading A Solubility Chart Page 4