# How can I easily identify if a substance is an acid or base based on its chemical formula? [closed]

I know of the Arrhenius definition, Bronsted Lowry definition and the Lewis definition for acids and bases but I don't know how to apply them on the spot. Also, some chemical formulas (such as acetic acid) throw me off since it has an OH at the end which causes me to think that it's a base when it really isn't.

Any tips/ways to identify if something is an acid or base simply based on its chemical formula?

## closed as too broad by Todd Minehardt, A.K., andselisk♦, Tyberius, MithoronApr 1 at 18:46

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

• Sulphuric acid has even 2 hydroxy groups, so it is not the proper criteria. :-) The important thing is to understand properties of elements and particular chemical bonds, so you can determine, if it is donor or acceptor of $\ce{H+}$ or an electron pair. – Poutnik Mar 31 at 22:07

As a concrete example, consider the formula $$\ce{C4H7NO3}$$.