BRAINCAKEExam-Style Questions - 1
Question. Methanol is made industrially from carbon monoxide and hydrogen:
CO(g) + 2H2(g) ⇌ CH3OH(g) ΔH = −91 kJ mol−1
(a) State and explain the effect of increasing the pressure on the equilibrium yield of methanol. (2)
(b) State and explain the effect of increasing the temperature on the equilibrium yield of methanol. (2)
(c) The process uses a copper-based catalyst. State its effect on the yield. (1)
(d) Suggest why a temperature of about 250 °C is used. (2)
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Key terms in this lesson
- exothermic
- Describes a reaction that transfers energy to the surroundings, so the temperature of the surroundings increases.
- endothermic
- Describes a reaction that takes in energy from the surroundings, so the temperature of the surroundings decreases.
More in Reversible Reactions and Dynamic Equilibrium
- Homogeneous Systems
- Heterogeneous Systems
- Industrial Processes
- The Contact Process
- Exam-Style Questions - 2
- Exam-Style Questions - 3
- Exam-Style Questions - 4
- Exam-Style Questions - 5
All 18 lessons in Reversible Reactions and Dynamic Equilibrium · All Edexcel AS-level Chemistry topics