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The catalytic activity of cationic iridium complexes for homogeneous hydrogen transfer from isopropanol to 2-cyclohexen-1-one to give cyclohexanol was studied. The reaction network contains consecutive, competitive, and reversible elements. In isopropanol these elements can be expressed as pseudo first-order processes: B с k4 D where A is 2-cyclohexen-1-one, B is cyclohexonone, C is cyclohexanol, and D is 2-cyclohexenol. (a) Derive the equations that govern the time dependence of the concentrations of the three species of primary interest (A, B, and C) for the case in which all of the indicated reactions obey pseudo first-order kinetics and in which species D is so reactive that it never accumu- lates to a significant extent. The latter constraint implies that one may assume that the concentration of D is both small and substantially constant throughout the course of the reaction. You may assume that only species A is present initially. Use the definitions of k' and k" from below. (b) The following rate constants are applicable at 83°C: ki = 1.4 x 10-3 3-1 ky = 1.2 x 10-4 s-1 k' = 1.8 x 10-3 3-1 k" = 4 x 10-4 8-1 where k₃k_3 k' =ki + k3 - k_3 tka and k3k4 k" = k' - ki = k_z tka 2 Prepare plots of the concentrations of species A, B, and C for the time interval from zero to 3 h. Express the species concentrations relative to the initial concentration of species A. (c) Use the answers developed in parts (a) and (b) to determine the time at which the concentration of species B passes through a maximum. Is the result obtained from the plot consistent with the closed form expression for this time that you derived from your expression for B(t)?