Аннотация:The database of recommended rate constants of chemical reactions in an H2-O2 gas mixture presented in /1/ is considered. Τhe chemical model includes dissociation, recombination, ex-change and quenching reactions. Both original experimental studies and well known reviews /2-10/ are used for the formation of this database. Data collected in a NIST computer database are also used /11/. The proposed rate constants are recommended for the temperature range 500−2500K.