![]() In fact, the names of the electrodes and the names of the ions correspond to one another. Then the ions are attracted to the electrode of opposite charge. When the circuit is turned on, the charge of each side of the battery is extended to the electrode connected to it. The unreactive electrode can pass electrons from the solution into the wire without itself taking part in the reaction. The battery is connected by wires to two electrodes dipped in the solution.Įlectrodes are typically made of an inert, stable substance such as platinum or carbon. The electricity in electrolysis typically comes from a battery. These two types of ions will be separated using electricity. The negatively charged ion is called the anion. The positively charged ion is called the cation. For visual simplicity, let’s erase the water molecules, keeping in mind that these ions are indeed dissolved in water. The potassium ions and bromide ions float freely in the water. We start with a salt solution, for example, potassium bromide dissolved in water. So the electrolysis of salt solutions is the electrical separation of ions dissolved in water. It is different from the liquid version of the Ionic compound, which contains no water molecules and only liquid molten salt. A solution where an ionic compound is dissolved in water is sometimes called an aqueous solution. And a salt solution means that those ions are dissolved in water. So we are separating the positive ions and the negative ions in the compound. And what are we separating? Well, a salt is another word for an ionic compound. But what does that term mean? The “electro” refers to electricity and “lysis” means separation. This video is about the electrolysis of salt solutions. In this video, we will learn how to predict the products of the electrolysis of aqueous salt solutions using the reactivity series. ![]()
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December 2022
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