Spectrophotometric and Conductometric Studies of the Complex between Beryllium and 2 : 4 Dihydroxybenzoic Acid in Aqueous Medium

The colourless complex formed by the interaction of beryllium with 2 : 4 dihydroxybenzoic acid has been studied spectrophotometrically in aqueous solutions of various ionic strengths and at different temperatures. The molecular composition of the complex has been determined by Job's method of continued variation and molar ratio method and is found to be 1 : 1. The values of ΔH and ΔS are calculated to be (1.49±0.2) k.cal/mole and (24.7±1.5) e.u. respectively. The probable structure of the complex is also suggested.