What is the catalyst used for oxidation of `SO_(2)` to `SO_(3)` in lead chamber process for manufacture of sulphuric acid ?

Options

A. Nitric oxide
B. Nitrous oxide
C. Potassium iodide
D. Dilute HCl

Answer

A

Explanation

In lead chambar process, a mixture containning `SO_(2)`, air NO is treated with steam `(H_(2)O)`.
In this reaction, NO (nitric oxide) act as a catalyst.
`2SO_(2)^(+)underset("(From air)")(O_(2))+2H_(2)O+underset("Catalyst")([NO])to2H_(2)SO_(4)+underset("Catalyst")([NO])`