A reaction mixture at equilibrium is compressed. The forward rate rises immediately. Why?
Gas particles gain more kinetic energy
Gas particles collide more frequently
The activation energy is lowered
The total mass of reacting gas increases
45 exam-style questions on Edexcel GCSE Chemistry 5.2 Reversible reactions and equilibria, covering 5.2.1 Reversible reactions and dynamic equilibrium, 5.2.2 The Haber process, and 5.2.3 Changing the position of a dynamic equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.