When the saturated solution is heated salt dissolves in it. But if the water is heated for a long time it will get evaporated. So how will we dissolve it?

Hi,

When the saturated solution is heated, a stage is reached where the atmospheric pressure is equal to the vapour pressure of the liquid. This is the boiling point of the solvent. So the dissolution process should take place before boiling process otherwise there would be no solvent left for dissolution.

Hope this helps.

Cheers!