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What is the catalyst used in the manufac...

What is the catalyst used in the manufacture of sulphuric acid by contact process?

A

Nickel powder

B

Platinised asbestos

C

Anhydrous `Al_(3)O_(3)`

D

Aluminium powder

Text Solution

Verified by Experts

The correct Answer is:
B
The reaction occuring in contact process are as follows,
`2SO_(2)+O_(2) underset(400-450^(@)C,1-5atm)overset("Platinised asbestos")hArr 2SO_(3)`.
`H_(2)SO_(4)+SO_(3) to H_(2)S_(2)O_(7)`
`H_(2)S_(2)O_(7)+H_(2)O tio 2H_(2)SO_(4)`
Therefore, plastinised asbestos is used as catalyst.
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