A chemist monitors the rate of the thermal decomposition of gaseous dinitrogen pentoxide, N2O5(g)\text{N}_2\text{O}_5\text{(g)}N2O5(g), in a sealed vessel of fixed volume at a constant temperature.
State and explain, using collision theory, how the rate of this reaction changes as the reaction proceeds over time.
127 exam-style questions on Edexcel GCSE Chemistry 8.1 Rates of reaction, covering 8.1.1 Measuring and interpreting rates of reaction, 8.1.2 Collision theory and the factors affecting rate, and 8.1.3 Catalysts and enzymes. Each one has a worked solution and a mark scheme showing where the marks go.