Abstract
AbstractThe composition and stability of the complex formed between chromium (VI) and Glycine Thymol Blue (G. T. B.) has been investigated using a spectrophotometric method. The chelate is reddish brown in colour and has λmax 570 nm against a reagent blank. The composition has been determined by different methods as 1: 1. The chelate gives maximum absorbance between pH 6.5 and 7.0. The values of log K as determined by two different methods are 5.21±0.1 and 5.24±0.1 and the values of ΔG° are −7.08±0.1 and −7.12±0.1 Kcal respectively at pH 6.8 and at 25°C.
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