acid acid-base extraction acid-base homeostasis acid-base physiology acid dissociation constant acidity function acidosis activity coefficient alkali alkali soils alkalinity alkalosis anthocyanin artificial seawater basic blood blue bromothymol blue buffer solution carbon dioxide carbonic acid carlsberg laboratory cerebrospinal fluid chemist chromaffin cell cologarithm concentration cytosol danish people dental plaque digital object identifier dissociation constant electromotive force environmental science enzyme equilibrium constant faraday constant galvanic cell gas constant gastric acid glass electrode hammett acidity function hibiscus hydrangea macrophylla hydrochloric acid hydrogen fluoride hydrogen ion ice table international organization for standardization ion selective electrode ionic strength logarithm marigold methyl red mineral acid mitochondrial matrix molar nernst equation non-nucleophilic base ocean acidification oceanography operational definition organic acid organic base oxalic acid ph indicator ph meter pancreas phenolphthalein pink protein proton affinity quadratic equation saturated calomel electrode seawater self-ionization of water silver chloride electrode sodium hydroxide solution standard state strong acid sulfate superacid superbase thymol blue universal indicator urine weak acid weak base