Dictionary > First-order kinetics

First-order kinetics

Definition
noun
An order of chemical reaction in which the rate of the reaction depends on the concentration of only one reactant, and is proportional to the amount of the reactant.
Supplement
It may be represented by the equation, rate = kA, where k is the reaction rate constant, and A is the concentration of the reactant.
An example of a reaction in a first-order is the decomposition of N2o5:

N2o5 → 2NO2 + ½ O2
because the rate of reaction depends on the concentration of N2o5 raised to the first power.

Compare: second-order kinetics

See also: chemical kinetics, reactant, reaction rate constant, chemical reaction.


You will also like...

Hormone Production
Hormone Production

Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..

Biosecurity and Biocontrol
Biosecurity and Biocontrol

This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to incl..

Circulation
Circulation

The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the ..

Growth and Plant Hormones
Growth and Plant Hormones

Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

Buttress roots
Roots

This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..

Digestion and Absorption of Food
Digestion and Absorption of Food

The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..