They use up electrical work to power reactant favorite non spontaneous reactions. Now, let's look at an example. Let's look at the decomposition of molten sodium chloride. Now, what molten means is that it's heated to a certain temperature so that it goes from a solid state to a liquid state. This is not an aqueous state. It's a liquid state of sodium chloride, meaning these guys dissociate, but there is no water in our mixture.