Question

the method of separating a soluble solid from its solution

Answer 1

Evaporation. Evaporating the solvent leaves back the solute in the container, that can be extracted

Answer 2

Soluble solid can be separated by distillation.

First we evaporate liquid from the solution. The liquid becomes vapour and solid is left behind.

Next, the vapour passes through a condenser and it cools and becomes water once again.

Then it passes through a pipe and reaches into a separate beaker. So we obtained both solid and liquid from the solution.