Solubility Graphs
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Figure 12-5
Figure 13-11
Figure 14-7
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Solubility Graphs
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Solubility Graphs
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1. At what temperature will 100 g of KNO3 dissolve in 100 g of water, using Figure 12.5?
2. In Figure 12.5, what mass of Pb(NO3)2 will dissolve in 100 g of water at 90°C?
a. in 200 g of water?
b. In 250 g of water?
3. At what temperature is 50 g of Pb(NO3)2 soluble in 100 g of water? Use Figure 12.5.
4. In Figure 14.7, 44 g of NaNO3 was added to 100 g of water. How many more grams must be
added to make a saturated solution at 10°C?
a. At 50°C?
b. At 70°C?
5. In Figure 14.7, what mass of Ce2(SO4)3 will dissolve in 100 g of water at 27°C?
a. In 50 g of water?
b. In 25 g of water?
6. What mass of KAl(SO4)2 will dissolve in 100 g of water at 80°C? Use Figure 14.7.
7. What mass of KAl(SO4)2 will dissolve in 100 g of water at 60°C? Use Figure 14.7.
8. What is the minimum mass, in grams, of 60°C water needed to dissolve 10 g of KAl(SO4)2? Use
Figure 14.7.
a. 20 g of KAl(SO4)2
b. 30 g of KAl(SO4)2
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Solubility Graphs
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9. In Figure 14.7, what mass of NH4Cl will dissolve in 100 g of water at 63°C?
a. In 60 g of water?
b. In 40 g of water?
c. In 20 g of water?
10. In Figure 14.7, what mass of KNO3 must be dissolved in 100 g of water at 72°C to make a
saturated solution if 76 g have been dissolved?
a. If 88 g have been dissolved?
b. If 101 g have been dissolved?
c. If 113 g have been dissolved?
11. At what temperature, in Figure 14.7, is the solubility of KAl(SO4)2 and Ce2(SO4)3 the same?
a. Of KNO3 and NH4Cl the same?
12. What is the difference, in grams of the solubilities of NH4Cl and NaCl at 40°C from Figure 14.7?
a. Of Ce2(SO4)3 and NH4Cl?
b. Of NaNO3 and KNO3?
13. List the formulas, in Figure 13.11, of the two compounds whose solubilities decrease with
increasing temperatures.
14. List the formula of the most soluble compound first, then the formula of the least soluble
compound in Figure 13.11.
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