Edexcel IAL Chemistry AS 8.16 Thermal stability trends
Edexcel IAL Chemistry AS 8.16 Thermal stability trends
A smaller or more highly charged cation polarises the anion more strongly, weakens its internal bonds and lowers the decomposition temperature or stability.
How this is tested
- Explain stability trends using cation radius, charge density and anion polarisation.
- Write balanced thermal-decomposition equations for Group 1 or 2 nitrates and carbonates.
- Interpret temperatures or graphs to compare decomposition and convert units where required.