# What is the "Ostwald process"?

Jul 14, 2017

Just to retire this the question, the Ostwald process is the industrial process for nitric acid manufacture........

#### Explanation:

The Ostwald process is very much complementary to the Haber process for dinitrogen fixation, as it utilizes tonne quantities of ammonia.......

$4 N {H}_{3} \left(g\right) + 5 {O}_{2} \left(g\right) \rightarrow 4 N O \left(g\right) + 6 {H}_{2} O \left(g\right) + \Delta$

And once you got $N O$, this can be oxidized up to nitric acid...

$N O \left(g\right) + \frac{1}{2} {O}_{2} \left(g\right) \rightarrow N {O}_{2} \left(g\right)$

And finally...........

$3 N {O}_{2} \left(g\right) + {H}_{2} O \left(l\right) \rightarrow 2 H N {O}_{3} \left(l\right) + N O \left(g\right)$

The nitrous oxide can be distilled off and recycled back into the former processes........