How do you change a dilute solution to concentrated solution?

Answer 1

Either add more solute to the solution, or remove some of the solvent (by distillation or some other method of reduction).

Answer 2

To change a dilute solution to a concentrated solution, you can remove some of the solvent (usually water) while keeping the solute amount constant. This can be achieved by evaporation, filtration, or by adding more solute to the solution without adding more solvent. Remember to do this carefully and in a controlled manner to avoid affecting the properties of the solute.