Aqueous solutions, II
At saturation, molecules or ions may enter or leave the solution, but the total concentration does not change (have dynamic equilibrium)
Most substances are more soluble, i.e. have higher equilibrium concentrations, at higher temperatures
Gasses also dissolve readily in water
Dissolved gasses will not escape from water unless we change the temperature or pressure of the water or alter the composition of the air above the water
The solubilities of gasses are usually lower at higher temperatures