Ch 24 - 48E

Chem 130- Chapter 14 notes Reaction rate: the speed at which a chemical reaction occurs. Reaction mechanism: step by step molecular-level view of the pathway from reactants to products. Chemical kinetics: area of chemistry concerned with the speed/rates of reactions. **4 factors that allow us to change the rate at which a reaction occurs**: 1. Physical state of the reactants. The more readily the reactants collide with one another, the more rapidly they react. Most are homogeneous. Heterogeneous conditions limit the area of contact of reactants. They tend to proceed faster if the surface area of the solid is increased. 2. Reactant concentrations. Most chemical reactions proceed faster if the concentration is increased. 3. Reaction temperature