Kinetics

the study of reaction rates

the change in concentration of a reactant or product per unit time

mol dm-3 s-1

The distribution of the molecular speeds of gas particles at a given temperature; as temper- ature increases, average kinetic energy increases and the distribution becomes wider and flatter.

minimum kinetic energy required for a reaction to occur

energy of motion

For a reaction to occur, the particles must collide, they must collide with the appropriate orientation, and they must collide with sufficient energy.

Using an instrument or device to determine chemical concentration by comparison of a liquid's color with standard colors; used to measure reaction rates by examining changes in color concentration over time

An analytical method for identifying a substance by its selective absorption of different wavelengths of light; used to measure the rate of reaction by examining changes in ab- sorbance/transmittance over time

method of measuring reaction rates through change in concentration of ions; usually done using a calibration curve

The reaction rate at a particular time as opposed to the average rate over an interval of time.

A solution of known concentration is used to determine the concentration of another solution; used to determine reaction rate by taking reaction samples at various time intervals

a reaction in which some visible change takes place in the reaction mixture when a certain point in the reaction is reached; more convenient way of measuring the rate of a reaction by taking single measurement