No abstract

The decay kinetics of Cl−2, produced by photolysis of chloride ions, has been studied using a flash photolysis technique with conductometric detection. Flash photolysis of Cl− ions in acid solutions eventually yields H2O2, Cl2, HClO and H2. A mechanism is proposed (Fig. 6) consistent with the experimental observations.

No abstract

The flash photolysis of bromide ions has been studied using conductometric detection. Together with earlier results from (lash photolysis [1, 2, 5] and pulse radiolysis investigations [3, 4] a mechanism is proposed consistent with the experimental observations.

The hydration of acetaldehyde catalyzed by HCl is investigated by the n.m.r. line broadening technique. It is shown that the rate of protonation of the very weak base acetaldehyde is a slow step in the catalyzed hydration reaction. The influence of intermediate states on kinetically broadened n.m.r. lines is discussed. In acetaldehyde+water mixtures, rich in acetaldehyde, the formation of a hemihydrate predominates. The kinetics of this reaction proves to be similar to that of the hydration reaction.