Iodine monochloride is a brown liquid. It reacts with chlorine gas to form iodine trichloride, a yellow solid. The reaction is reversible.
ICl(l)+Cl2(g)⇌ICl3(s)\mathrm{ICl(l)} + \mathrm{Cl_{2}(g)} \rightleftharpoons \mathrm{ICl_{3}(s)}ICl(l)+Cl2(g)⇌ICl3(s)
The forward reaction is exothermic. A teacher sets up the reaction in a sealed tube and leaves it until equilibrium is reached.
The teacher passes more chlorine gas into the tube.
Predict what happens to the amount of yellow solid.
Give a reason for your answer.
The tube is placed in a beaker of hot water. Predict and explain the effect on the amount of yellow solid.
The pressure of chlorine in the tube is increased. Predict the effect on the amount of yellow solid. Give a reason for your answer.
Chlorine is a toxic gas. Suggest one safety precaution the teacher should take.
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.