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Video Source: www.youtube.com/watch?v=EyBkPwsRY2E
What is the definition of an Arrhenius acid or a Lewis base or even a Bronsted-Lowry acid or base? The answer awaits you. • Properties of Acids and Bases: • Properties of Acids and Bases | The B... • Thanks for stopping by, this is 2 minute classroom and today we are going a little deeper into acids and bases by looking at three different definitions. Arrhenius, Bronsted-Lowry, and Lewis. • The arrhenius definition is the probably the most familiar to you. An arrhenius acid is a molecule that will donate a hydrogen ion (or proton) when dissolved in water. We call it a proton because a typical hydrogen atom has only one proton and one electron, so if you make it a cation by removing the electron, all you have is a proton. • An arrhenius base is a molecule that will produce a hydroxide ion when dissolved in water. • So, the acid provides a proton, and the base provides a hydroxide. However, this is only when dissolved in water. • That’s where the other definitions come in. • With the Bronsted-Lowry definition, we only refer to what happens to the hydrogen ion or proton. So the acid is a proton donor, much like an arrhenius acid, but the base is defined as a proton acceptor. So if there if a compound will bond a free proton, it is a Bronsted-Lowry base. And unlike Arrhenius acids and bases, this doesn’t have to be in water. • The Lewis definition of acids and bases dives into organic chemistry looking at the electrons of each atom. So a Lewis acid is a molecule that will accept a pair of electrons while a Lewis base is a molecule that donates a pair of electrons. • It’s important to note that these definitions are just different ways to look at and understand acids and bases. Just because a compound can be defined as an arrhenius acid, for example, doesn’t mean it can’t also be defined as a Bronsted-Lowry or Lewis acid. • I hope this video helped you understand these different definitions a little better. If you want to know more about the properties of acids and bases you can watch my acids and bases video. • If you have any questions throw them in the comments, and I’ll catch you next time.
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