Abstract
The reactivity of Cl2 with aqueous H2O2, both with and without added base, was investigated in a static bulb. The rate data for Cl2 absorption in these solutions are explained in terms of a diffusion-reaction model, and the results are consistent with the assumption that the reaction responsible for O2(1D) production in the O2(1D) generator utilized in the chemically pumped iodine laser is a direct reaction between Cl2 and HO−2 at the generator gas-liquid interface. The data indicate that the probability of loss of a Cl2 molecule that strikes the alkaline H2O2 gas-liquid interface is ∼10−2. The solubility of Cl2 in H2O2-H2O mixtures as well as implications of the experiment for practical O2(1D) generators are discussed.
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