A reaction produces 48 cm3 of gas in 24 s. What is its average rate?
0.50 cm3 s−10.50\,\mathrm{cm^3\,s^{-1}}0.50cm3s−1
24 cm3 s−124\,\mathrm{cm^3\,s^{-1}}24cm3s−1
72 cm3 s−172\,\mathrm{cm^3\,s^{-1}}72cm3s−1
2.0 cm3 s−12.0\,\mathrm{cm^3\,s^{-1}}2.0cm3s−1
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.