(a)[5]
Explain, in terms of the equilibrium position, what would be observed if sulfuric acid was added to solution Y. Explain, in terms of the equilibrium position, what would be observed if sodium hydroxide was added to solution Y.
(b(i))[2]
What volume of hydrogen is made from $100\,\text{cm}^3$ of methane under these conditions?
(b(ii))[1]
If the pressure is raised, the hydrogen yield drops below 70%. Explain why, in terms of the equilibrium position.
(b(iii))[1]
If the temperature is lowered, the hydrogen yield falls. What does this tell you about the reaction between methane and steam?
(b(iv))[1]
Why is a catalyst employed in this reaction?