Chemistry · Oct / Nov 2022 · Paper 12 · Question 23
5070Rate of reaction
In the Contact process, sulfur is converted into sulfuric acid. A catalyst is added to the reaction mixture shown in the equation. 2SO2 + O2 ⇌ 2SO3 What is the purpose of the catalyst?
- Ato lower the activation energy for the reaction
- Bto oxidise the sulfur dioxide
- Cto reduce the sulfur dioxide
- Dto shift the equilibrium to the right
As printed in the paper
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Correct answer: A. to lower the activation energy for the reaction
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