Reaction Rate Ch. 17

Several factors can influence reaction rate Several factors can influence reaction rate. We will focus on the following five factors. Nature of reactants. Example: Na + Water vs. Mg + Water Surface Area. Example: C (Cube) + O2 vs. C (fine power) + O2 Temperature. Example: Increase in temperature=increased reaction rate Concentration. Oxygen tanks vs Oxygen in air Presence of Catalyst. Decomposition of H2O2 is moderate. Placing KI (catalyst) reduces the amount of energy required to decompose the peroxide. This increases the reaction rate. Ex. Elephant toothpaste