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Identify the catalyst in the contact process.

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in Engineering Chemistry II by (789k points)
Identify the catalyst in the contact process.

(a) Finely divided molybdenum

(b) Platinised asbestos

(c) Nitric acid

(d) Pentoxide

I had been asked this question in an international level competition.

This interesting question is from Application of Colloids in division Surface Chemistry of Engineering Chemistry II

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Correct option is (d) Pentoxide

The best I can explain: Contact process is used in the process of manufacture of sulphates. Pentoxide has the capacity to renew the sulphides (which will convert to sulphates) from the acidified solution formed during the reaction. Thus it also promotes the rate of reaction by achieving the equilibrium state fast.

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