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Chemistry: Post your doubts here!

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And Can Sulphur Oxide be Present in Cars? They Sometimes Give X is present and Oxidizes In Atmosphere?
Could You Tell Which Oxides Could OxidiseIN AIR? THnx
 
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Sir,when is burning S in air gives SO2 and when it gives SO3 ??
Reaction of SO2 with ammonia will give us ........
Thnx :D

Assume it gives SO2 as the main product, though its not suprising should a bit of SO3 should form.

Based on syllabus from years ago, a catalyst (vanadium oxide) needed to change SO2 to SO3 during manufacturing of H2SO4
 
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