Abstract
AbstractThe composition of the red coloured molybdenum(VI) –(Alizarin Red S) chelate (γmax 470 mμ), determined by continuous variations method, the slope ratio method and the mole ratio method, comes out to be 1:2. The chelate is stable between pH 2.5 and 6.0. The value of log K is 9.2 ± 0.1, the free energy change of formation at pH 3.5 ± 0.2, ionic strength 0.1 M (NaClO4) and 25°C, being −12.6 ± 0.1 K Cals./mole.
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