BRAINCAKEThe Effect of Temperature and Catalysts on the Rate Constant.
The value of the rate constant depends on the orientation factor, activation energy and temperature. The rate constant is given by
k = A e -Ea/RT
Ea is the activation energy, R is the gas constant and T is the temperature in Kelvin. This is known as the Arrhenius Equation. 
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Key terms in this lesson
- activation energy
- The minimum energy required for a collision between particles to result in a reaction.
- rate constant
- The constant of proportionality, k, in the rate equation. Its value depends on temperature.
More in Rate of Reaction
- Experimental Determination of the Rate of Reaction
- The Rate Equation
- The Order of a Reaction
- The Rate Constant k
- Worked Example
- Half-Lives and Reaction Rate Graphs
- The Rate Determining Step
- Catalysts
All 11 lessons in Rate of Reaction · All OCR A-level Chemistry topics