A reactor converts gaseous substance J into gaseous substances K and L. The forward reaction is exothermic.
J(g)⇌K(g)+2L(g) \mathrm{J(g) \rightleftharpoons K(g) + 2L(g)} J(g)⇌K(g)+2L(g)Four trials are carried out.
| Trial | Temperature | Pressure |
|---|---|---|
| R | 300 ∘C300\ ^{\circ}\text{C}300 ∘C | 40 atmospheres |
| S | 500 ∘C500\ ^{\circ}\text{C}500 ∘C | 40 atmospheres |
| T | 300 ∘C300\ ^{\circ}\text{C}300 ∘C | 160 atmospheres |
| U | 400 ∘C400\ ^{\circ}\text{C}400 ∘C | 80 atmospheres |
In which trial is the equilibrium yield of L highest?
Trial S
Trial R
Trial U
Trial T
136 exam-style questions on OCR GCSE Chemistry 6.1 Improving processes and products, covering 6.1.1 Extracting metals industrially and by electrolysis, 6.1.2 Life cycle assessment and recycling, 6.1.3 Biological methods of metal extraction, 6.1.4 The Haber process and the production of fertilisers, 6.1.5 Alloys and their uses, 6.1.6 Corrosion and its prevention, 6.1.7 Comparing and selecting materials, and 6.1.8 Industrial conditions, rate and position of equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.