1.1 Measuring the Rate of Chemical Reactions Chemical kinetics Is the investigation of the rate at which these reactions occur and the factors that affect them. Considerations when measuring reaction rate Is there a measurable property associated with the change in quantity of a reactant or product you might use to determine the rate? Exactly how might you measure the quantity of reactant or product in the laboratory? Finally, what units would be associated with the quantity you measure and consequently, what units will represent the reaction rate? To determine reaction rate Text Pages 2 - 3

1.1 Measuring the Rate of Chemical Reactions Reaction Measuring Techniques Direct and Indirect The technique used to measure the change in the quantity of reactant or product varies greatly depending on the reaction involved and the available apparatus. In many cases, the reactant or product involved in a reaction may be measured directly For example: The technique used to measure the change in the quantity of reactant or product varies greatly depending on the reaction involved and the available apparatus. In many cases, the reactant or product involved in a reaction may be measured directly. For example: For aqueous solutions, pH or solutions colour. Text Page 5

1.1 Measuring the Rate of Chemical Reactions Calculating Reaction Rate Calculating average reaction rate See BC Science Chemistry 11, Section 4.5 for review of mole ratio Text Pages 7 - 9