Essential Chemistry for IGCSE - The Chemical Industry (Section 1 - No. 16)
What is the role of a 'catalyst' in the Contact process?
To speed up the reaction between sulfur dioxide and oxygen.
To slow down the reaction between sulfur dioxide and oxygen.
To react with the sulfur dioxide.
To react with the oxygen.
Explanation
A catalyst speeds up the reaction between sulfur dioxide and oxygen.
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