Question

# What is the catalyst used for oxidation of $$SO_2$$ to $$SO_3$$ in lead chamber process for manufacture of sulphuric acid?

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

Solution

## The correct option is A Nitric oxide Nitric oxide $$(NO)$$ is the catalyst used for oxidation of $$SO_2$$ to $$SO_3$$ in lead chamber process for manufacture of sulphuric acid. The overall reaction can be written as$$\displaystyle 2SO_2+O_2+2H_2O \xrightarrow {NO} 2H_2SO_4$$Chemistry

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