Reaction Kinetics A2 Flashcards
Define rate of reaction of reaction
We can calculate rate of reaction by measuring a decrease in concentration of particular reactant or an increase in the concentration of a particular product over a period of time.
Rate of reaction= change in concentration/time taken for change
Unit: mol dm-3 s-1
Usually measured in seconds
What is the rate constant?
The proportionality constant, k, in a rate equation
E.g. K[NO2]^2
What is a rate equation?
An equation showing the relationship between the rate constant and the concentrations of the species that affect the rate of the reaction.
Rate equations can only be determined from experimental data and not stoichiometric equation.
The rate equations for some reactions may include compounds that are not present in the chemical equation.
What is the order of reaction? Used
The power to which the concentration of reactant
