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Name Date Class<br />
2<br />
<strong>Study</strong> Guide<br />
82 Solubility and Concentration<br />
Solubility and Concentration<br />
Chapter<br />
22<br />
Directions: Use the information in the table to graph the solubility curves for barium hydroxide, Ba(OH) 2 ;<br />
copper(II) sulfate, CuSO 4 ; potassium chloride, KCl ; and sodium nitrate, NaNO 3 . Use a different colored pencil for<br />
each compound.<br />
Compound<br />
Ba(OH) 2<br />
CuSO 4<br />
KCl<br />
NaNO 3<br />
Solubility (g/100 g of water)<br />
180<br />
160<br />
140<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
Directions: Use the information in the table and your graph to answer the following questions.<br />
1. At about what temperature will 100 g of water dissolve equal amounts of potassium chloride<br />
and barium hydroxide?<br />
2. At about what temperature will 37 g of both copper(II) sulfate and potassium chloride dissolve<br />
in 100 g of water?<br />
0˚C<br />
23.10<br />
3. If 100 g of sodium nitrate are dissolved in 100 g of water at 60°C, is the solution formed<br />
saturated, unsaturated, or supersaturated?<br />
4. If 32 g of copper (II) sulfate are dissolved in 100 g of water at 20°C, is the solution produced<br />
saturated, unsaturated, or supersaturated?<br />
20˚C<br />
60˚C<br />
100˚C<br />
1.67 3.89<br />
20.94 101.40<br />
28.0<br />
73.0<br />
Solubility in g/100 g Water<br />
32.0<br />
34.2<br />
87.6<br />
Temperature<br />
61.8<br />
45.8<br />
122.0<br />
114.0<br />
56.3<br />
180.0<br />
0 20 40 60 80 100 120<br />
Temperature ˚C<br />
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
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