Question A1: The excited oxygen atom Write down a kinetic equation (net rate law) for the concentration change of excited oxygen atoms with time d[0]/dt where t represents time. Integrate your rate law, to afford an analytical expression showing the actual variation of the excited oxygen atom concentration with time, given that no o* exists prior to t = 0. HINT: you may find that making assumptions that I and [M] are independent of time to be helpful! Use the steady-state approximation and your kinetic equation to determine the steady-state concentration of excited oxygen atoms., and identify under what conditions the actual variation of the excited oxygen atom concentration corresponds to the steady-state variation. Then, estimate the minimum illumination time required for the non-steady state and steady-state concentrations to be identical to within 1%. Comment on whether the steady-state hypothesis is a good approximation for the atmospheric behaviour of excited oxygen atoms where the solar intensity changes over periods of hours. Question A2: The ground state oxygen atom Write down a kinetic equation (net rate law) for the concentration change of ground-state oxygen atoms with time, do, where t represents time, neglecting equation (A.2). Integrate your rate law, to afford an analytical expression showing the actual variation of the ground-state oxygen atom concentration with time, under conditions of constant irradiation, and that all species M are present in excess. Make sure you identify appropriate boundary conditions. Use the steady-state approximation and your kinetic equation to determine the steady-state concentration of ground-state oxygen atoms. Then, identify whether the steady-state hypothesis is a suitable approximation to apply to ground-state oxygen atoms in atmospheric modelling. Comment on any similarities or differences you have found in the application of the steady-state approximation for the reactive intermediates (O and O*) considered in Questions A1 and A2.

Solved: Question A1: The excited oxygen atom Write down a kinetic equation (n

Home
questions and answers
question a1 the excited oxygen atom write down a kinetic equation net

Question

Question A1: The excited oxygen atom Write down a kinetic equation (net rate law) for the concentration change of excited oxygen atoms with time d[0]/dt where t represents time. Integrate your rate law, to afford an analytical expression showing the actual variation of the excited oxygen atom concentration with time