Edexcel IAL Chemistry A2 14.22 Importance of biological and food buffers
Edexcel IAL Chemistry A2 14.22 Importance of biological and food buffers
Tie the context to chemistry: show which buffer species removes added H+ or holds pH steady, then connect stable pH to enzymes, organisms or food preservation.
How this is tested
- Explain HCO3- removing added H+ in blood or cells when carbon dioxide increases.
- Explain citrate or other food buffers maintaining pH to reduce fungal or bacterial deterioration.
- Link stable pH to enzyme function, living systems or controlled microbial growth.