Amine Reactions - Video Tutorials & Practice Problems

Acid-Base Reaction Concept 1

In this video, we're gonna take a look at amine reactions through the prism of acid base reactions. Now, under this type of reaction, an acid reacts with an amine which represents a weak base. Now, recall when a base accepts in H plus, it transforms into a conjugate acid. This conjugate acid of an amen, it's called the ammonium ion. Now, here we're going to say for the ammonium ion, we modify the ending of a mean which is the neutral form of armine to ammonium ion. So if we take a look here at this generic amine reaction, we have methylamine as our starting amine. It's reacting with hydrochloric acid, which is an acid. We know following the brasini definition that the acid donates an H plus to the base. So when it accepts that H plus, it's now accepted an H plus. So now nitrogen is making four bonds. So it's gonna be positively charged. And we're gonna say when a nitrogen is positively charged by making four bonds, that's when the moniker of ammonium ion comes into play. So we're going from methylamine to methyl ammonium ion. OK. So this would be the name of our newly created ammonium ion product.

Acid-Base Reaction Example 1

Predictive products formed from the final reaction between nitric acid and ammonia. Right. So, nitric acid is our acid, ammonia is our neutral mean. So it's a weak base. Here, we're using the brasi definition, we know that the acid donates in H plus. So when that acid donates in H plus, it forms a conjugate base. So it's gonna form the nitrate ion and then ammonia gains an H plus to become NH four positive. So it becomes the ammonium ion. In addition to this notice that there is a solid arrow going forward because we have a strong species mixing with a weak species. Nitric acid is a strong acid mixing with ammonia, which is a weak base. When a strong species, acid or base is involved, we have complete formation of our products. So we have a solid arrow going forward. OK? But in this particular example, here, we're gonna say our nitrate ion and ammonium ions are our products created between the reaction of nitric acid and ammonia.

Determine the ammonium ion formed in the following reaction between diethylamine and hydrobromic acid.

• A.
• B.
• C.
• D.