Using the expression you propose in (ii), predict the KIE for a bond cleavag reaction involving the diatomic molecule X-Y where X is a heavy atom and Y represents the isotopes of hydrogen H and D. Given that the zero-point- energies of the molecules X-H and X-D are 35 and 30 kJ mol-' respectively, calculate the KIE at: T = 298 K And T = 20 K How well do you expect these values to compare with experimental data and explain your predictions? What mechanistic conclusions could you draw if the KIE you predicted were observed Using the expression you propose in (ii), predict the KIE for a bond cleavag reaction involving the diatomic molecule X-Y where X is a heavy atom and Y represents the isotopes of hydrogen H and D. Given that the zero-point- energies of the molecules X-H and X-D are 35 and 30 kJ mol-' respectively, calculate the KIE at: T = 298 K And T = 20 K How well do you expect these values to compare with experimental data and explain your predictions? What mechanistic conclusions could you draw if the KIE you predicted were observed