The catalyst used in the oxidation of SO2 to SO3 is_________.
Nickel
Manganese dioxide
Platinised asbestos
Glycerine
A
Glycerine
B
Nickel
C
Platinised asbestos
D
Manganese dioxide
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Solution
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Sulphur trioxide is prepared by passing oxygen and sulphur dioxide through concentrated sulphuric acid to dry the gases, which are then passed over a heated platinised asbestos catalyst at 4500C.
SO2+O2→2SO3
So answer is D.
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