title: Dissolution rate equations in column-confined dissolution.
abstract: Equations are derived for the dissolution of a soluble solid in a column into a liquid stream. The equations are substantiated by experiments using oxalic acid dihydrate as a test substance. The dissolution rate constant, k, of oxalic acid dihydrate depends on linear velocity, v (centimeters per second), by the following equation: k = (2.54 +/- 0.76) X 10(-4) v, where k is measured in centimeters per second.
mesh_terms: D002627:Chemistry, Physical / Q000295:instrumentation; D007700:Kinetics; D008433:Mathematics; D008956:Models, Chemical; D010070:Oxalates; D012995:Solubility
chemical_list: D010070:Oxalates