Combined Science: Trilogy 8464: C6.The Rate and Extent of Chemical Change Topical Past Paper Questions

Sulfuric acid is produced by an industrial process. In the process, sulfur dioxide (SO_{2}) reacts with oxygen (O_{2}) to produce sulfur trioxide (SO_{3}). The equation for the reversible reaction is: $$ 2\mathrm{SO}_{2}(\mathrm{g})\quad+\quad\mathrm{O}_{2}(\mathrm{g})\quad\right…

A student investigated the rate of decomposition of hydrogen peroxide using three different catalysts: • manganese dioxide - copper oxide • zinc oxide. Figure 2 shows the apparatus. Figure 2 This is the method used. 1. Measure 20 cm³ of hydrogen peroxide solution into a flask. 3.…

This question is about catalysts and equilibrium. 1 What type of substance is a catalyst in biological systems? [1 mark] Tick (✓) one box. 2 Explain how a catalyst increases the rate of a reaction. [2 marks] The reversible reaction for the production of ammonia is: $$ \begin{arra…