Pyridinium bromide 1C5H5NHBr2 is a strong electrolyte that dissociates completely into C5H5NH+ and Br-. An aqueous solution of pyridinium bromide has a pH of 2.95. (a) Write out the reaction that leads to this acidic pH.

Video transcript

Hello, everyone. Today, we are being given the following problem. Methanol, ammonium chloride, a strong electrolyte completely dissociates into our methyl ammonium and chloride. What is the chemical equation that makes up the solution of our methyl ammonium chloride have an acidic ph. So we have to show this reaction of mental ammonium chloride. We're going to have the following and it's going to disassociate as it was stated into our mental ammonium ion as well as our chloride ion. And so let's take a look at our Ion 1st, are methyl ammonium ion first. This is a poly atomic ion. This just means that it is comprised of multiple atoms and it is an ion because it is charged. So we can say also that this is a positively charged amine. The Amin comes from the fact that it is an NH group. And therefore, we can say this is acidic. Now, if you look at our chloride ion, this is just an eye on that. We're going to have to add a strong base to. So we're going to add protons, we're going to add protons and this is going to form our hydrochloric acid, the hydrochloric acid is a strong acid. And because it is a strong acid, the ion that it produces chloride is going to be neutral. Any species that comes from a strong base or a strong acid is going to come from a is going to result in a neutral ion. And so our poly atomic ion, our methyl ammonium ion is a weak acid. So it's going to lionize in the following manner. We're going to have this eye on here, methyl ammonium ion Aquarius form react with liquid water in a reversible reaction to form our method ammonia plus our hydro ni um ions. And so this is going to be our overall chemical equation that makes the solution of our ammonium methyl ammonium chloride acidic. And with that, we've answered the question overall, I hope this helped. And until next time.