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Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming na
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Answer #1

Formation of Nitric Acid

From given reactions ,

Rxn(2) + 1/2 × rxn(1)

1/2 N2 + .3/2 H2 + 2 O2 -------> HNO3 + H2O

So ∆Hrxn = -330 - (-92/2)

=> -376 kJ

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