How can one determine acidity based on the structure of a compound?

One can determine acidity based on the structure of a compound by looking at the presence of acidic functional groups, such as carboxylic acids or phenols, which can easily release hydrogen ions (H). The more easily a compound can release H ions, the stronger its acidity. Additionally, the stability of the resulting conjugate base after the release of H can also indicate the acidity of a compound.