question archive Nitric oxide (NO) can be formed from nitrogen, hydrogen and oxygen in two steps
Nitric oxide (NO) can be formed from nitrogen, hydrogen and oxygen in two steps
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Nitric oxide (NO) can be formed from nitrogen, hydrogen and oxygen in two steps. In the first step, nitrogen and hydrogen react to form ammonia:
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N2(g) + 3H2(g) →2NH3(g) |
ΔH=−92.kJ |
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In the second step, ammonia and oxygen react to form nitric oxide and water:
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4NH3(g) + 5O2(g) → 4NO(g) +6H2O(g) |
ΔH=−905.kJ |
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Calculate the net change in enthalpy for the formation of one mole of nitric oxide from nitrogen, hydrogen and oxygen from these reactions.
Round your answer to the nearest kJ.
