Chemistry HL

Reactivity 2. How much, how fast and how far?

Chemistry syllabus topic from the 2025 structure/reactivity roadmap.

Find reaction rate from a gas-volume graph Read two points off a volume-of-gas vs time graph and find the average rate of reaction as volume over time (the gradient). Find reaction rate from an amount-time graph Read two points off an amount-of-product vs time graph and find the rate of reaction as amount over time (the gradient). Find the rate of mass loss from a graph Read two points off a mass-lost vs time graph and find the rate of mass loss as mass over time (the gradient). Derive and use rate expressions Determine reaction order from initial rate data Use integrated rate relationships and half-life Apply Arrhenius equation and activation energy Use equilibrium constants for gases and solutions Solve multi-step equilibrium and ICE-table problems Analyse weak acid and weak base equilibria Use buffer equations and buffer capacity reasoning Apply solubility product and precipitation reasoning