Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. In the first step, nitrogen and hydrogen react to form ammonia: N2(g) + 3 H,(9) - 2 NH,(g) AH=-92. kJ In the second step, ammonia and oxygen react to form nitric acid and water: NH,(g) + 20,(g) - HNO,(g) + H,O(g) AH=-330. kJ Calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. Round your answer to the nearest kJ.

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Using Hess's Law to calculate net reaction enthalpy
Stella v
Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. In the first step,
nitrogen and hydrogen react to form ammonia:
N,(g) + 3 H,(g) - 2 NH,(g)
AH=-92. kJ
In the second step, ammonia and oxygen react to form nitric acid and water:
NH,(g) + 20,(g) → HNO,(g) + H,O(g)
AH =-330. kJ
do
Calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions.
Round your answer to the nearest kJ.
團
Explanation
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Transcribed Image Text:Using Hess's Law to calculate net reaction enthalpy Stella v Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. In the first step, nitrogen and hydrogen react to form ammonia: N,(g) + 3 H,(g) - 2 NH,(g) AH=-92. kJ In the second step, ammonia and oxygen react to form nitric acid and water: NH,(g) + 20,(g) → HNO,(g) + H,O(g) AH =-330. kJ do Calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. Round your answer to the nearest kJ. 團 Explanation Check O 2020 McGraw-Hill Education. All Rights Reserved Taorms of Use Privacy Accessibilty 414 PM 10/31/2020 O Type here to search hp the fraf 128 end prt sc delete home 144 40 num lock backspace %24 %3D %23 5 6. 7. 8. 6.
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