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ch 16 vocab
| Term | Definition |
|---|---|
| hydronium ion (H3O+) | the predominant form of the proton in aqueous solution |
| Bronsted-Lowry acid | a substance (molecule or ion) that acts as a proton donor |
| Bronsted-Lowry base | A substance (molecule or ion) that acts as a proton acceptor |
| amphiprotic | refers to the capacity of a substance to act as either an acid or a base |
| conjugate base | a substance formed by the loss of a proton fro a Bronsted-Lowry acid |
| conjugate acid | a substance formed by the addition of a proton to a Bronsted-Lowry base |
| conjugate acid-base pair | An acid and a base, such as H2O and OH-, that differ only in the presence or absence of a proton |
| autoionization | the process whereby water spontaneously forms low concentrations of H+(aq) and OH-(aq) ions by proton transfer from one water molecule to another |
| ion-product constant | for water, K sub w is the product of the aquated hydrogen ion and hydroxide ion concentrations |
| pH | the negative log in base 10 of the aquated hydrogen ion concentration : pH= -log[H+] |
| acid-dissociation constant (K sub a) | an equilibrium constant that expresses the extent to which an acid transfers a proton to solvent water |
| polyprotic acid | a substance capable of dissociating more than one proton in water |
| base-dissociation constant (K sub b) | an equilibrium constant that expresses the extent to which a base reacts with solvent water, accepting a proton and forming OH-(aq) |
| hydrolysis | a reaction with water. when a cation or an anion reacts with water, it changes the pH |
| oxyacid | a compound in which one or more OH groups, and possibly additional oxygen atoms are bonded to a central atom |
| carboxylic acid | a compound that contains the -- COOH functional group |
| Lewis acid | an electron-pair acceptor |
| Lewis base | an electron-pair donor |