BRAINCAKEReaction Rates
Revision notes for Reaction Rates in Edexcel Chemistry (8CH0). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.
- The Rate of ReactionThe rate of reaction is the change in the amount or concentration of a reactant or product per unit time. rate = change in concentration ÷ time…
- Collision TheoryCollision theory explains why reactions happen and what controls their rate.
- Activation EnergyThe activation energy, Ea, is the minimum energy that colliding particles must have for a reaction to occur.
- Steric HindranceCollision theory says that particles must collide with the correct orientation to react.
- Effect of ConcentrationIncreasing the concentration of a reactant in solution increases the rate of reaction.
- Effect of PressureFor reactions involving gases, increasing the pressure increases the rate of reaction.
- Effect of Surface AreaWhen one reactant is a solid, the reaction can only happen at its surface, because only the particles on the surface can collide with particles of…
- Maxwell-Boltzmann Distribution CurveThe molecules in a gas do not all have the same energy.
- Effect of TemperatureIncreasing the temperature increases the rate of reaction, often by a large amount.
- Collisions in SolutionCollision theory applies to reactions in solution just as it does to gases.
- Effect of CatalystsA catalyst is a substance that increases the rate of a reaction without being used up.
- Catalysts in IndustryMost industrial chemical processes use catalysts, because they bring large economic and environmental benefits.
On the specification
- Topic 9: Kinetics I