# What is the general formula of a carboxylic acid?

Nov 15, 2014

A carboxylic acid has the formula $C {H}_{3} C O O H$, that is a central carbon atom, with an oxygen atom double bonded to it at the top, an $O H$ group bonded to it at a 135 degree angle, and an R group, which in this case is a methyl group with the formula $C {H}_{3}$, bonded to the central carbon atom at a 225 degree angle.

There are five different compounds with this general formula, where the only change is what is bonded to the carbon at the 135 degree angle, and which R group is bonded at the 225 degree angle. These compounds are: aldehyde, carboxylic acid, ketone, ester and amide.