What is a solubility curve

Soulubility is the amount (in grams) of a soluble compound that will dissolve in a set amount of water (normally 100 grams). This value is different for different temperatures. A solubility curve is a graph of the solubility of a compound (grams/100 grams water on the Y axis) at various temperatures (Celsius on X Axis). Each compound has a different curve.

It is graphical representation of the solubity of a particular solute in a given solvent with respect to varying temperatures, generally, temperature is directly porportional to solubity, as temperature increases solubity increases.