01:160:162 Lecture Notes - Lecture 6: Hydrogenation, Reaction Rate, Electronegativity
Document Summary
Consider the reaction for the combustion of propane. An elementary step is a reaction which directly describes collisions on a molecular level. A reaction mechanism is a sequence of elementary steps which describe the process by which reactants change to products in a chemistry reaction. overall stoichiometry, but could not be a description of molecular collisions. Such a description would involve 6 molecules (1 c3h8 and 5 o2) colliding at once. In a mixture of gases, the most likely number of molecules to collide at once is two. Rarely, but still possible, three molecules collide at once. It is also possible for one molecule to come apart. This is called unimolecular. three (usually two) molecules colliding. (1) the steps must add up to the overall reaction (2) each step must be elementary. This means that it could involve no more than. The reaction shows 1 molecule of c3h8 reacting with 5 molecules of o2.
