O-LevelChemistryRates of Reaction5070/12 · Oct/Nov 2020 · Q261 Mark
The table contains some facts about sulfur dioxide and sulfuric acid and comments on these facts. Which row is correct? fact, comment A In the manufacture of sulfuric acid, sulfur reacts with oxygen to make sulfur trioxide. The equation for this reaction is 2S(s) + 3O2(g) ⇌ 2SO3(g). B Nickel is used as the catalyst in the Contact process. Catalysts speed up a reaction by lowering the activation energy, Ea. C Sulfuric acid is used in car batteries. This increases the efficiency of the petrol engine. D The use of low sulfur petrol is beneficial because it minimises the formation of acid rain. Sulfur dioxide is acidic because it is the oxide of a non-metal.
Afact: In the manufacture of sulfuric acid, sulfur reacts with oxygen to make sulfur trioxide. comment: The equation for this reaction is 2S(s) + 3O2(g) ⇌ 2SO3(g).
Bfact: Nickel is used as the catalyst in the Contact process. comment: Catalysts speed up a reaction by lowering the activation energy, Ea.
Cfact: Sulfuric acid is used in car batteries. comment: This increases the efficiency of the petrol engine.
Dfact: The use of low sulfur petrol is beneficial because it minimises the formation of acid rain. comment: Sulfur dioxide is acidic because it is the oxide of a non-metal.
✓ Correct answer
D: fact: The use of low sulfur petrol is beneficial because it minimises the formation of acid rain. comment: Sulfur dioxide is acidic because it is the oxide of a non-metal.
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