How do you calculate solubility from a line graph?

The value of solubility corresponding to the selected temperature can be found at the foot of the last perpendicular, so please draw a perpendicular on the temperature axis at the point where solubility needs to be determined. Next, locate the point at which it intersects the solubility curve and drop a perpendicular from that point to the solubility axis.

To calculate solubility from a line graph, you need to determine the concentration of the solute (in grams per liter or moles per liter) at a specific temperature where the line intersects the x-axis (temperature axis). The point where the line intersects the x-axis represents the saturation point or the maximum solubility of the solute at that temperature. You can read the concentration value directly from the graph at that temperature. This concentration value represents the solubility of the solute at that temperature.