The neutralization reaction between hydrobromic acid (HBr) and sodium hydroxide (NaOH) can be represented by the following equation:
\[ \text{HBr (aq)} + \text{NaOH (aq)} \rightarrow \text{NaBr (aq)} + \text{H}_2\text{O (l)} \]
In this reaction, HBr and NaOH are both in aqueous solution, while the products sodium bromide (NaBr) remains in aqueous solution, and water (H₂O) is in the liquid state.
If you meant to refer to "COH" as "NaOH" in your message, please confirm, as "COH" isn't a standard abbreviation for any well-known compound. If "COH" stands for a different compound, please provide the correct compound for an accurate equation.