Salt making

If the salt that is being made is insoluble for example CaSO₄

Precipitation:

• mix the solutions containing the ions required in the salt

• Try and make the other salt soluble so the salt you need is the only one made that is solid

• NaSO₄ is soluble and CaO is soluble therefore NaO is soluble while CaSO₄ is not

If the salt is soluble but the Metal base or carbonate is not