Arrhenius equation is an important concept in chemistry that helps in understanding the relationship between the rate of chemical reactions and temperature. It is named after the Swedish chemist Svante Arrhenius who proposed the equation in 1889. The equation is widely used in various fields of science, including chemistry, physics, and engineering.
Definitions
Arrhenius equation is a mathematical equation that describes the relationship between the rate of a chemical reaction and temperature. The equation is expressed as:
k = A * e^(-Ea/RT).
Where k is the rate constant of the reaction, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the temperature in Kelvin.
The equation suggests that the rate of a chemical reaction increases with an increase in temperature, as the activation energy required for the reaction to occur decreases.
Origin
The Arrhenius equation was proposed by Svante Arrhenius, a Swedish chemist, in 1889. He was studying the effect of temperature on the rate of chemical reactions and observed that the rate of most reactions increases with an increase in temperature. He proposed the equation to explain this observation and to quantify the effect of temperature on the rate of chemical reactions.
Meaning in different dictionaries
According to the Oxford English Dictionary, the Arrhenius equation is “an equation expressing the dependence of the rate of a chemical reaction on temperature, activation energy, and other factors.”
According to Merriam-Webster, the Arrhenius equation is “an equation in physical chemistry that relates the rate of a chemical reaction to the temperature and activation energy of the reaction.”
Associations
The Arrhenius equation is associated with the study of chemical kinetics, which is the study of the rates of chemical reactions.
It is also associated with the study of thermodynamics, which is the study of the relationships between heat, energy, and work.
Synonyms
Some synonyms of the Arrhenius equation include:
- Arrhenius law.
- Arrhenius rate law.
- Arrhenius equation for reaction rates.
Antonyms
There are no antonyms of the Arrhenius equation, as it is a mathematical equation that describes a relationship between variables.
The same root words
The Arrhenius equation is named after Svante Arrhenius, a Swedish chemist. The root words of the equation, Arrhenius, refers to the scientist who proposed the equation.
Example Sentences
- The Arrhenius equation is used to calculate the rate of chemical reactions at different temperatures.
- The activation energy in the Arrhenius equation represents the energy required for a reaction to occur.
- The Arrhenius equation is an important concept in chemistry that helps in understanding the relationship between temperature and chemical reactions.