APP A chemical compound thatproduces an acid when added to water. Forexample,sulfur trioxide is the acid anhydrideof sulfuric acid:SO3+H2O→H2SO4Organic acid anhydrides are derived by re-moving the elements of water (i. e. two hy-drogen atoms and one oxygen) f......（本文共 443 字） [閱讀本文] >>
