The Absorption Spectrum and the Dissociation of H2O2

摘要

Although Holt, McLane, and Oldenberg state that they were unable to observe a sharp cut in the absorption spectrum of hydrogen peroxide vapor, it is shown that their measurements indicate a rather abrupt increase of the absorption coefficient at 1920A.It is doubtful that the dissociation energy of hydrogen peroxide can be derived from its absorption spectrum. However, it seems possible that the photohyphen;chemical decomposition of hydrogen peroxide gives an upper limit for its dissociation energy.Our measurements of the absorption coefficient of hydrogen peroxide agree well with the results of Holt, McLane, and Oldenberg.