acid r

See under acid, alcohol r. A r. which, when it replaces half the hydrogen in one or more molecules of water, forms an alcohol, electronegative r. In the dualistic theory of salts, the non-metallic component of a salt, which in electrolysis is evolved at the positive pole. Acid r's are electronegative. electropositive r. In the dualistic theory of salts, that constituent of the salt which, in electrolysis, is evolved at the negative pole, and which consists either of a metal or of a group of atoms which go into and out of combination like a metal. Alkali r's are electropositive. negative r. See electronegative r. positive r. See electropositive r. [Lat., radicula.1