name the catalyst used for conversion of SO2 to so3 in contact process how is oelum form from S3 in this process
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Answer:
Adding an excess of oxygen to sulfur dioxide in the presence of the catalyst vanadium pentoxide at 450 °C and 1-2 atm. The sulfur trioxide formed is added to sulfuric acid which gives rise to oleum The oleum is then added to water to form sulfuric acid which is very concentrated.
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The catalyst used - vanadium pentoxide
Explanation:
- The catalyst used - vanadium pentoxide
- Oleum is a term used for a fuming sulfuric acid that is composed of various compositions of sulfur trioxide in sulfuric acid
The contact process in a brief is as follows -
- sulphur dioxide is formed
- conversion of sulphur dioxide into sulphur trioxide (it is the reversible reaction)
- conversion of sulfur trioxide to concentrated sulphuric acid
The temperature used is 450 °C and pressure up to 1-2 atm.
The sulfur trioxide formed is reacted to sulfuric acid that forms oleum .
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