IB Chemistry SL 2.2.1 Rate of reaction
IB Chemistry SL 2.2.1 Rate of reaction
Practise scoring on rate calculations by reading graphs carefully, choosing correct units, and separating average rate from an initial tangent value.
How this is tested
- accept units like mol dm^-3 s^-1; reject rates with wrong spacing, powers, or time position
- find average rate from data over a stated interval, e.g. CO2 mass change in the first 20 s
- draw a tangent at t = 0 and use its gradient to get the initial rate from a graph