Chemistry

Solubility Curves


These are graphs that show the variation of the solubility coefficients of the substances as a function of temperature.

See the solubility coefficients of potassium nitrate in 100g of water.

From these data it is possible to assemble the solubility curve.

Temperature (° C)

(g) KNO3 / 100g of water

0

13,3

10

20,9

20

31,6

30

45,8

40

63,9

50

85,5

60

110

70

138

80

169

90

202

100

246

To any point on of the solubility curve, the solution is saturated.
To any point above of the solubility curve, the solution is supersaturated.
To any point below of the solubility curve, the solution is unsaturated.