iirc it's more about the state of matter of the molecules being dissolved; As in oxygen is more soluble in cold water because it's a gas at room temp and salt is more soluble in hot water because it's a solid at room temp.
Excess heat energy in a liquid allows gas to escape easier, reducing solubility of gas in hot water. On the other hand, excess heat energy is needed in order to free more molecules from a solid like sodium chloride and keep them in solution.
UtsuhoMori t1_is5dyd4 wrote
Reply to comment by Fun_Wind7710 in Does the salinity of ocean water increase as depth increases? by rhinotomus
iirc it's more about the state of matter of the molecules being dissolved; As in oxygen is more soluble in cold water because it's a gas at room temp and salt is more soluble in hot water because it's a solid at room temp.
Excess heat energy in a liquid allows gas to escape easier, reducing solubility of gas in hot water. On the other hand, excess heat energy is needed in order to free more molecules from a solid like sodium chloride and keep them in solution.