Diffusion-kinetic calculations of the effect of nitrous oxide on the yields of ionic species in the radiation chemistry of water

Abstract

Deterministic diffusion-kinetic calculations show that the yields of the cationic and the anionic species, H30+ and eaq-+ OH-, produced in the fast electron radiolysis of neutral water are significantly reduced by the addition of nitrous oxide as an electron scavenger. This reduction is demonstrated to be a direct consequence of the conversion of the hydrated electron to the hydroxide anion which undergoes more rapid intraspur reactions with H30+ than does ea; . These model calculations indicate that at 100 ns the OH-yield in N20-saturated water is -11% lower than the total anion yield in the absence of N20. These calculations may, in fact, slightly underestimate the effect of N 2 0 since the predicted decrease in conductance is 2-755 less than that determined experimentally. 0 1992 American Chemical Society , , I -

Oxygen Atom Exchange in Aqueous Solution by O- + H2O .fwdarw. OH- + OH and OH + H2O .fwdarw. H2O + OH. A Study of Hydrogen Atom Transfer

“…However, we may attempt to sketch reaction 1 at a molecular level as follows. We picture O' in water as being hydrogen bonded to surrounding layers of water molecules through which a number of reversible proton transfers to O' take place by a Grotthuss mechanism before the final separation of the products OH and OH" occurs: O' HzO H20 «=* *OH OH" H20 <=* OH H20 OH' *0' H20 H20 (13) In a few instances a hydrogen atom instead of a proton is transferred in the first step:…”

Pulse radiolysis studies of the dynamics of acid-base equilibration in phenolic systems

“…Acta 1986, 99, 379. (8) For example: Science 1992, Mar 20, 255, 1513-5. Marrian, C. R. K.; Dobisz, E. A.; Glembocki, O. J.…”