For a certain gas-phase reaction involving only substances X and Y, the experimentally determined rate law is rate=k[X]2[Y].
Several different single-step mechanisms could, in principle, generate this rate law.
Answer the following.
(1) Part 1: (a) Write two distinct elementary reactions, each involving only species X and Y, whose stoichiometry would produce the rate law above. Use the simplest integer coefficients.
(2) Part 2: (b) For each elementary reaction you wrote in part (a), state its molecularity and discuss one kinetic or statistical factor that influences the likelihood of such a collision occurring.
(3) Part 3: (c) Select whichever of the elementary reactions from part (a) you judge to be most plausible. Justify your choice with quantitative or qualitative arguments that compare the probabilities of the competing collision events.