September 18
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Bell Ringer • What does being “saturated” mean?
Solubility The maximum amount of solute that can dissolve in a specific amount of solvent usually 100 g. g of solute 100 g water
Supersaturated, saturated and unsaturated A supersaturated solution contains more than the maximum amount of solute. Undissolved solute remains. A saturated solution contains the maximum amount of solute that can dissolve. An unsaturated solution does not contain all the solute that could dissolve
Learning Check S1 At 40°C, the solubility of KBr is 80 g/100 g H2O. Indicate if the following solutions are (1) saturated or (2) unsaturated (3) supersaturated A. ___65 g KBr in 100 g of water at 40°C B. ___200 g KBr in 200 g of water at 40°C C. ___40 KBr in 50 g of water at 40°C
Solution S1 At 40°C, the solubility of KBr is 80 g/100 g H2O. Indicate if the following solutions are (1) saturated or (2) unsaturated (3) supersaturated.
A. 2 Less than 80 g/100 g H2O B. 3 Same as 100 g KBr in 100 g of water at 40°C, which is greater than its solubility C. 1 Same as 80 g KBr in 100 g of water, which is less than its solubility
Temperature and Solubility of Solids Temperature 0° 20°C 50°C 100°C
Solubility (g/100 g H2O) KCl(s)
NaNO3(s)
27.6 34.0 42.6 57.6
74 88 114 182
The solubility of most solids (decreases or increases ) with an increase in the temperature.
Temperature and Solubility of Solids Temperature 0° 20°C 50°C 100°C
Solubility (g/100 g H2O) KCl(s)
NaNO3(s)
27.6 34.0 42.6 57.6
74 88 114 182
The solubility of most solids increases with an increase in the temperature.
Solubility Curve
Homework Page 82 #1-7
Solubility The maximum amount of solute that can dissolve in a specific amount of solvent usually 100 g. g of solute 100 g water
Supersaturated, saturated and unsaturated A supersaturated solution contains more than the maximum amount of solute. Undissolved solute remains. A saturated solution contains the maximum amount of solute that can dissolve. An unsaturated solution does not contain all the solute that could dissolve
Learning Check S1 At 40°C, the solubility of KBr is 80 g/100 g H2O. Indicate if the following solutions are (1) saturated or (2) unsaturated (3) supersaturated A. ___65 g KBr in 100 g of water at 40°C B. ___200 g KBr in 200 g of water at 40°C C. ___40 KBr in 50 g of water at 40°C
Solution S1 At 40°C, the solubility of KBr is 80 g/100 g H2O. Indicate if the following solutions are (1) saturated or (2) unsaturated (3) supersaturated.
A. 2 Less than 80 g/100 g H2O B. 3 Same as 100 g KBr in 100 g of water at 40°C, which is greater than its solubility C. 1 Same as 80 g KBr in 100 g of water, which is less than its solubility
Temperature and Solubility of Solids Temperature 0° 20°C 50°C 100°C
Solubility (g/100 g H2O) KCl(s)
NaNO3(s)
27.6 34.0 42.6 57.6
74 88 114 182
The solubility of most solids (decreases or increases ) with an increase in the temperature.
Temperature and Solubility of Solids Temperature 0° 20°C 50°C 100°C
Solubility (g/100 g H2O) KCl(s)
NaNO3(s)
27.6 34.0 42.6 57.6
74 88 114 182
The solubility of most solids increases with an increase in the temperature.
Solubility Curve
Homework Page 82 #1-7
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