Essential Chemistry for IGCSE - The Chemical Industry (Section 1 - No. 32)
In the Contact process, what is the purpose of the sulfur trioxide absorber?
To convert SO2 to SO3
To dissolve SO3 in water
To remove impurities from SO3
To absorb SO3 into concentrated sulfuric acid
Explanation
To absorb sulfur trioxide in concentrated sulfuric acid.
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