Page 269 - Chemistry eBook

Finding the Saturation Point
How to Find the Saturation Point of a Solute at a Given Temperature:
Reffy, Table G (p. 3)
1. Find the temperature at the bottom of the table.
Table G
2. Follow the temperature up till you hit the line representing the solute you are looking for. This is
the point of intersection.
140.
130.
120.
3. At the point of intersection, follow across the graph to the left to find the solubility (expressed
in grams per 100 grams of water).
At 90°C, how many grams of NH4Cl will form a soluble solution in 100 g of water?
1. Find 90°C on the bottom of the table.
2. Follow the 90°C line up until you hit NH4Cl.
3. Follow the point of intersection across the graph to the left. The solubility is 72 g/100 g water. Answer: 72 grams of NH4Cl
110.
100. 90.
150.
Solubility Curves at Standard Pressure
KI
NaNO3 KNO3
80. 730. 60. 50. 40. 30. 20. 10.
0
0 10.
20. 30.
40. 50. 60. 70. Temperature (°C)
80. 90. 100.
1
NH4Cl
2
Reference Tables for Physical Setting/Chemistry – 2011 Edition 3
HCl
KCl
Cl KClO
Na
3
NH3
S
O2
Solubility (g solute/100. g H2O)
UNIT 7: SOLUTIONS / SOLUBILITY © 268