Solubility Curve - Casio fx-7400G PLUS Booklet

EC-4 Solubility Curve
Exercise
Industrial Chemistry (1) (Solubility Curve)
The nearby table shows the solubility of potassium nitrate KNO
the solubility curve of potassium nitrate.
Temperature (°C)
Solubility (g/100g water)
Graphic Calculator Operation
(1) From the Main Menu, enter the STAT Mode, input tem-
perature into List 1 and solubility into List 2.
(2) Scatter diagram
1
Pressing
graph.
(3) Regression curve display
3
Press (X^2) to display the regression curve on the
range of second order points.
By displaying the graph...
• You can see the changes in the values.
• You can see how the solubility curve changes according to material.
• The regression curve makes it possible to estimate solubility for temperatures not
shown in the table and provides data for experiments.
1
(GRPH) (GPH1) to display the nearby
JIKKYO SHUPPAN CO., LTD.: KOGYO KAGAKU (p. 55)
0 10 20 30
13.3 22.0 31.6 45.6 63.9 85.2 109 137
– 37 –
in water. Use this to draw
3
40 50 60 70