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6.1 Improving processes and products

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Question 12

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.

TrialTemperaturePressure
R300 ∘C300\ ^{\circ}\text{C}300 ∘C40 atmospheres
S500 ∘C500\ ^{\circ}\text{C}500 ∘C40 atmospheres
T300 ∘C300\ ^{\circ}\text{C}300 ∘C160 atmospheres
U400 ∘C400\ ^{\circ}\text{C}400 ∘C80 atmospheres

In which trial is the equilibrium yield of L highest?

[1]
A

Trial S

B

Trial R

C

Trial U

D

Trial T

Markscheme

6.1 Improving processes and products Questions

  1. GCSE
  2. /Chemistry
  3. /6.1 Improving processes and products

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.

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