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The oxidation of ammonia in excess air produces


Question

The oxidation of ammonia in excess air produces

Options

A) NO

B) N2O

C) NO2

D) N2O4


The correct answer is A.

Explanation:

Ammonia is converted to nitric acid in 2 stages. It is oxidized by heating with oxygen in the presence of a catalyst such as platinum with 10% rhodium, to form nitric oxide/nitrogen(ii)oxide and water/steam. This reaction is strongly exothermic, making it a useful heat source once initiated:
4NH\(_3\)(g) + 5O\(_2\)(g) \(\rightarrow\) 4NO(g) + 6H\(_2\)O(g) (ΔH = −905.2kJ/mol)

Explanation provided by Ella


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Dicussion (1)

  • Ammonia is converted to nitric acid in 2 stages. It is oxidized by heating with oxygen in the presence of a catalyst such as platinum with 10% rhodium, to form nitric oxide/nitrogen(ii)oxide and water/steam. This reaction is strongly exothermic, making it a useful heat source once initiated:
    4NH\(_3\)(g) + 5O\(_2\)(g) \(\rightarrow\) 4NO(g) + 6H\(_2\)O(g) (ΔH = −905.2kJ/mol)