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Explain the manufacture of nitric acid b...

Explain the manufacture of nitric acid by Ostwald's process.

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Step -1 : Catalytic oxidation of ammonia gives nitric oxide.
`NH_(3)+5O_(2)underset(500k9"bar")overset("pt/Rb catalyst")rarr4NO+6H_(2)O`
Step-2: Nitric oxide thus formed combines with oxygen gives `NO_(2)`
`2NO+O_(2)hArr2NO_(2)`
Step -3 : Nitric oxide so formed dissolves in water to give `HNO_(3)`
`H_(2)O+3NO_(2)rarr2HNO_(3)+NO`
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