Edexcel IAL Chemistry A2 11.4 Initial-rate and continuous experiments
Edexcel IAL Chemistry A2 11.4 Initial-rate and continuous experiments
Vary one initial concentration while holding others effectively constant, define a reproducible early endpoint or collect a full time series and process it consistently.
How this is tested
- Use low clock-reagent concentration so 1/t approximates the initial rate before concentrations change.
- Plot continuous concentration or volume data against time with correct axes and units.
- Hold other reactants in excess or constant while varying one initial concentration.