Question

By mistake, you added salt instead of sugar to the oil. How can you remove the salt?

Answer 1

To remove the salt you have to : -

First add water to the solution.
As, once the water is added the oil floats on water. Slowly, remove the layer of oil... then heat the solution of salt water... Water evaporates and salt is left back !

Hope this helps !

Answer 2

Salt is ionic, and oil is covalent. If you add water, the salt will dissolve in the water, and the oil will float to the top. You could then skim the oil and start over with sugar. To double-check, you could even make sure the oil does not conduct electricity.