Rate constants for the reactions of O^-, O₂ ^-, NO₂^-, CO₃^-, and CO₄^- with HCl and ClO_- with NO, NO₂, SO₂, and CO₂ at 300 K

The rate constants for several ion-molecule reactions involving chlorine-containing ions or molecules have been measured at 300 K with a flowing afterglow apparatus. These include the reaction of O^- with CCl ₄, several negative ions with HCl, ClO^- with several neutrals, and Cl^- with O₃. These reactions are used to place limits on the electron affinity of ClO: E.A.(ClO)=1.95±0.25 eV. The implications of these results to the negative ion chemistry of the atmosphere are discussed.