Gas-Phase Reaction Rate of Sodium Hydroxide with Hydrochloric Acid

摘要

The reactions of metallic species introduced into the atmosphere by meteor ablation may play a significant role in stratospheric chemistry. In particular, it has been suggested that the reaction of NaOH with HCl might affect the concentration of odd chlorine, thus having an impact on the ozone balance. This paper describes the first measurement for this reaction rate constant. At 308 K, we find that K= (2.8 + or = 0.9) x 10 to the minus 10 power molecule. As a result of the methods developed to perform this measurement, we have also determined estimates of the following room temperature rate constants in units of cc/molecule/s: k(MaO + HCl yield NaCl +OH) = 2.8 x 10 to the minus 10 power, k(NaOH + H yield Na + H20 ) 4 x 10 to the minus 12 power, k(NACl ; H yield Na + HCl ) = 5 x 10 to the minus 14+ or -1 power, and k(Na + H202) = 6.9 X 10 to the minus 11 power, where approximately 0.6 of the reactions produce NaOH + OH, with the remainder forming NaO+ H2O.