Photochemical Reactions of Uranyl Ions with Organic Compounds III. The Correlation between the Reaction Mode and the Pre-Equilibrium in the Photolysis of the Uranyl-lactate System

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On the basis of the assumed mechanism for the photolysis of the uranyl-lactate system, the equilibrium constant for the complex formation, K, was evaluated from the photo-kinetic data by using a monochromatic 4047 Å light; it was then compared with those obtained from the usual spectrophotomeric measurements. A comparison of the K values obtained by means of the photo-kinetic data (1.0–1.1×10−1) and by means of the analytical data (1.1–1.2×10−1) gave an excellent agreement; there was also a good agreement between the slope of the plot of the photo-kinetic data and that predicted from the assumed mechanism. The results supported the crude mechanism assumed earlier.
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