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Question
Which concentrated acid oxidizes sulphur directly to sulphuric acid ? Write the equation for the same. What is the name of the process by which sulphuric acid is manufactured ? Name the catalyst used in the process.
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Solution
Hot concentrated nitric acid oxidizes sulphur directly into sulphuric acid.
\[\ce{S + 6HNO3 ->[\Delta] H2SO4 + 6NO2 + 2H2O}\]
The name of the process by which sulphuric acid is manufactured is contact process.
Vanadium pentoxide is the catalyst used during the process.
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