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Tutorial Course

GCSE Chemistry — Rates of Reaction and Energy Changes

Led by Svante Arrhenius

1 modules ~5 hours of tutorial Chemistry Updated today

Module 10 of Edexcel GCSE Chemistry. Led by Svante Arrhenius, whose 1889 equation k = A·e^(-Ea/RT) gave reaction kinetics its quantitative foundation and named the activation energy. The student covers collision theory, the four factors affecting rate, catalysts, exothermic and endothermic reactions, bond-energy calculations (Higher), activation energy, and reaction profiles, including Core Practical 7.1.

Rates of Reaction an…10
  1. Module 10

    Rates of Reaction and Energy Changes

    Led by Svante Arrhenius

    The question

    What governs how fast a reaction proceeds, what energy changes accompany it, and how does a catalyst alter the activation energy without itself being consumed? The spec asks the student to apply collision theory to all four rate factors (temperature, concentration, surface area, pressure), interpret rate-vs-time graphs by gradient, define and explain catalysts, distinguish exothermic from endothermic reactions, account for the bond-energy basis of overall energy change, calculate ΔH from bond energies (Higher), define activation energy, and draw reaction profiles for both reaction types.

    Outcome

    the student can carry out Core Practical 7.1 by both gas-production and disappearing-cross methods, apply collision theory to all rate factors, define and explain catalysts in terms of activation energy, distinguish exothermic from endothermic, account for the bond-energy basis of ΔH, calculate ΔH from bond energies (Higher), and draw reaction profiles. *(Edexcel 1CH0 Paper 2 — Topic 7, spec points 7.1–7.16)*

    Sub-units

    1. ○ 10.1 Core Practical 7.1: rates by gas production and disappearing cross
    2. ○ 10.2 Collision theory and the four rate factors
    3. ○ 10.3 Catalysts and activation energy
    4. ○ 10.4 Exothermic and endothermic reactions
    5. ○ 10.5 Bond-energy basis of ΔH (Higher: quantitative)
    6. ○ 10.6 Reaction profiles and activation energy