Edexcel IAL Chemistry A2 12.5 Causes of entropy change
Edexcel IAL Chemistry A2 12.5 Causes of entropy change
Compare the number and freedom of particles before and after the change, prioritising gas formation or loss and explaining how lattice ions become dispersed in solution.
How this is tested
- Predict the sign of ΔSsystem from changes in gas moles and physical states.
- Explain ionic-solid dissolution through lattice ions becoming mobile and dispersed.
- Justify entropy direction from increased particle number or formation of a gaseous product.