No effect on equilibrium position or enthalpy change
What No effect on equilibrium position or enthalpy change means in Chemistry A-Level, as defined for OCR.
Definition of No effect on equilibrium position or enthalpy change
Check what you remember
Read the wording for your board, then hide it and explain No effect on equilibrium position or enthalpy change in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The catalyst does not alter the equilibrium position or the overall enthalpy change, because it accelerates the forward and reverse reactions equally.
Topics that use No effect on equilibrium position or enthalpy change
- Reaction rates (OCR A-Level)
Related terms
- Activation energy
- Alternative reaction pathway
- Boltzmann distribution
- Catalysis and activation energy
- Catalyst examples
- Catalyst regenerated and not consumed
- Catalyst regenerated in the mechanism
- collision frequency
Using No effect on equilibrium position or enthalpy change in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Chemistry questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge