Problem 1 (a) For the reaction of the prehydrated electron (epre ) with a scavenging/reacting molecule S in water (given that the concentrations are: [S] >> [epre ], [H2O] >> [epre ]), show that the survival percentage P of epre at time t=to is : P=exp(-Tokpre[S]), where to is the intrinsic lifetime of epre and kpre is the rate constant of the reaction of epre with the molecule S. (b) Given to=0.5 ps (5x10-13 s) and kpre=1.0x1012 M's!, calculate the molecule's concentration in M in order to scavenge 50% of the epre yield. Problem 1 (a) For the reaction of the prehydrated electron (epre ) with a scavenging/reacting molecule S in water (given that the concentrations are: [S] >> [epre ], [H2O] >> [epre ]), show that the survival percentage P of epre at time t=to is : P=exp(-Tokpre[S]), where to is the intrinsic lifetime of epre and kpre is the rate constant of the reaction of epre with the molecule S. (b) Given to=0.5 ps (5x10-13 s) and kpre=1.0x1012 M's!, calculate the molecule's concentration in M in order to scavenge 50% of the epre yield