a) Solubility curves give a general idea about the ability of a solute to dissolve in water, at different temperatures.
b) The solubility of the solute at any temperature, between the mentioned highest & lowest temperatures, can be more or less accurately read.
c) The mass of crystals deposited, when a saturated solution cooled from a higher to a lower temperature& can be calculated.
As per the given graph, the solubility of potassium nitrate at 60oC= 110 g and at 50oC = 91 g.
Therefore, by cooling a saturated solution of potassium nitrate containing 100 g of water from 60oC to 50oC, 19 g of the solute (110 g - 91 g) is deposited in the form of crystals.
In our next blog we shall learn about cell potential I hope the above explanation was useful.Keep reading and leave your comments.