This document discusses acid-base reactions and concepts including: - Conjugate acids and bases are the species that remain after an acid donates or a base accepts a proton. - Stronger acids have weaker conjugate bases, and stronger bases have weaker conjugate acids. Reactions favor production of weaker acid/base pairs. - Amphoteric compounds can act as both acids and bases, such as water and ammonia. - Hydroxyl groups can make compounds acidic, basic, or amphoteric depending on other factors like electronegativity. - Strong acid-strong base neutralization involves complete ionization to hydronium and hydroxide ions which then neutralize to form water.