Reactions of acetyl radicals. Part 2.—Reaction of acetaldehyde with nitrogen dioxide in presence of nitric oxide
The rate of production of nitrogen dioxide from mixtures of acetaldehyde, nitric oxide and nitrogen dioxide has been measured at temperatures between 20 and 80°C. The reaction is attributed to the disproportionation of nitric oxide by acetyl radicals produced in the step, CH3CHO+NO2→CH3CO+HNO2, the rate constant of which is estimated to be 106.2 exp (–12,600/RT)l. mole–1 sec–1. The production of nitrogen dioxide is inhibited by iodine; the rate constant of the reaction of acetyl radicals with iodine is estimated to be about 5 times that of the reaction with nitrogen dioxide.