So what actually happens is a base pair or a pair of electrons down on the water grabs the H ion, producing hydronium ion. So actually, the Hydride ion produced by an Iranius acid is always associated with a hydronium molecule. And that's because our solvent is always water. According to the Iranian acid based concept in Aqueous Solutions, the hydronium ions are responsible for acidic properties and the oh ions are responsible for the basic properties. Now, one problem with such a definition exists molecules such as ammonia, molecules that produce basic solutions and react with acids and yet they have no oh ions. So if we look at the structure of NH three Ammonium, we see that it contains three HS, one N and a pair of electrons.