The catalyst used for the manufacture of H2SO4 by contact process is:
Correct answer: B. V2O5
- A. SO3
- B. V2O5
- C. Fe2O3
- D. Pt/Pd
Explanation
The contact process is one of the most common methods of forming Sulphuric acid. In this process not only Sulphuric acid is formed, but Oleum and Sulphur trioxide is also formed.First, Sulphur dioxide and oxygen are combined in a 1:1 ratio. And it is then treated with the catalyst Vanadium pentoxide at a temperature between (400-450)° and pressure. This converts the Sulphur dioxide into Sulphur trioxide Now this Sulphur trioxide formed is reacted with Sulphuric acid in order to dilute it. In this process Oleum is formed. This Oleum formed is then diluted with water to ultimately yield Sulphuric acid:Therefore, the catalyst used in making the contact process is Vanadium pentoxide.
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