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Calculate ΔH∘ in kilojoules for the reaction of ammonia (ΔH∘f=−46.1 kJ/mol) with O2 to yield nitric oxide NO (ΔH∘f=91.3 kJ/mol) and H2O(g) (ΔH∘f=−241.8 kJ/mol), a step in the Ostwald process for the commercial
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Jan 10, 2019
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Calculate ΔH∘ in kilojoules for the reaction of ammonia (ΔH∘f=−46.1 kJ/mol) with O2 to yield nitric oxide NO (ΔH∘f=91.3 kJ/mol) and H2O(g) (ΔH∘f=−241.8 kJ/mol), a step in the Ostwald process for the commercial production of nitric acid.,
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Justin Lucente
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1/2 N2 + 3/2 H2 -> NH3 : dH = -46.1 kJ/mol
1/2 N2 + 1/2 O2 -> NO : dH = +91.3 kJ/mol
H2 + 1/2 O2 -> H2O : : dH = -241.8 kJ/mol
The equation for the oxidation of ammonia to nitric oxide is
4 NH3 + 5 O2 -> 4 NO + 6 H2O
The heat of reaction is:
- 4 x -46.9 + 4 x 91.3 - 6 x 241.8 = -809kj
EwH
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Jan 16, 2019
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