BRAINCAKEReaction Rates
Revision notes for Reaction Rates in OCR Chemistry A (H032). Read the start of any lesson here, then sign in free for the whole lesson, the R.E.C.I.P.E. recall steps and the quiz.
- The Rate of ReactionThe rate of a reaction is measured by the change in concentration over time.
- Factors affecting the Rate of a Chemical ReactionFactors that change the rate of a chemical reaction are: • concentration or pressure if the reactants are gases •temperature •use of a catalyst…
- Following the Progress of a ReactionThe progress of a reaction can be followed by monitoring the rate of formation of a product or the rate of removal of a reactant.
- CatalystsA catalyst increases the rate of a chemical reaction without undergoing any permanent change itself.
- Homogenous CatalystsA homogenous catalyst has the same physical state as the reactants.
- Heterogenous CatalystsA heterogenous catalyst has a different physical state from its reactants.
- Catalysts and SustainabilityMost chemicals are produced industrially using catalysts.
- AutocatalysisA chemical reaction undergoes autocatalysis if a product if the reaction acts as a catalyst for the reaction.
- The Boltzmann Distribution Curve and TemperatureAt any given temperature, molecules have a range of speeds and energies.
- The Boltzmann Distribution Curve and CatalystsA catalyst provides an alternative reaction pathway with lower activation energy.