Arrhenius equation
E562307
The Arrhenius equation is a fundamental formula in physical chemistry that relates the rate of a chemical reaction to temperature through an exponential dependence on activation energy.
Observed surface forms (7)
| Surface form | Occurrences |
|---|---|
| Arrhenius law | 1 |
| Arrhenius plot | 0 |
| A | 0 |
| E_a | 0 |
| R | 0 |
| T | 0 |
| k | 0 |
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
chemical equation
ⓘ
empirical relationship ⓘ mathematical model ⓘ rate law ⓘ |
| appliesTo |
elementary reactions
ⓘ
many complex reactions approximately ⓘ |
| assumes |
constant activation energy over temperature range
ⓘ
single dominant activation energy ⓘ |
| denotes |
absolute temperature
ⓘ
activation energy ⓘ pre-exponential factor ⓘ rate constant ⓘ universal gas constant ⓘ |
| describes | temperature dependence of reaction rate ⓘ |
| field |
chemical kinetics
ⓘ
physical chemistry ⓘ |
| graphType | Arrhenius plot NERFINISHED ⓘ |
| hasDomain | thermally activated processes ⓘ |
| hasForm | k = A e^{-E_a / (RT)} ⓘ |
| hasMathematicalForm | ln k = ln A - E_a/(R T) ⓘ |
| hasXAxis | 1/T ⓘ |
| hasYAxis | ln k ⓘ |
| implies | ln k is linear in 1/T ⓘ |
| interceptOfArrheniusPlot | ln A ⓘ |
| mathematicalType | exponential function ⓘ |
| namedAfter | Svante Arrhenius NERFINISHED ⓘ |
| relatedTo |
Eyring equation
NERFINISHED
ⓘ
transition state theory ⓘ |
| relates |
rate constant to activation energy
ⓘ
rate constant to temperature ⓘ |
| shows |
higher activation energy gives stronger temperature dependence
ⓘ
reaction rate increases with temperature ⓘ |
| slopeOfArrheniusPlot | -E_a/R ⓘ |
| symbolFor |
A
ⓘ
E_a ⓘ R ⓘ T ⓘ k ⓘ |
| usedIn |
accelerated aging tests
ⓘ
atmospheric chemistry ⓘ combustion modeling ⓘ corrosion rate prediction ⓘ determination of activation energy ⓘ enzyme kinetics ⓘ estimation of reaction rates ⓘ materials degradation studies ⓘ semiconductor reliability modeling ⓘ |
| usesUnit |
joule per mole
ⓘ
kelvin ⓘ |
| yearProposed | 1889 ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Arrhenius law