Determine the molar enthalpy of formation for the HNO3 NO₂(g) +1/4 O₂(g) + 1/2 H₂ O() →HNO3(aq)

Chemistry
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ISBN:9781133611097
Author:Steven S. Zumdahl
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Chapter6: Thermochemistry
Section: Chapter Questions
Problem 77E: Give the definition of the standard enthalpy of formation for a substance. Write separate reactions...
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Determine the molar enthalpy of formation for the HNO3
NO₂(g) +1/4 O₂(g) + 1/2 H₂ O()) HNO3(aq)
Given:
1/2 N₂(g) + O₂(g) → NO₂(g) AH- +33.2 kJ
1/2 H₂(g) + 1/2 N₂(g) + 3/2 O₂(g) → HNO3(aq) AH= -202.3 kJ
H₂(g) +1/2 O₂(g) →H₂ O((g)) AH= -285.8 kJ
Transcribed Image Text:Determine the molar enthalpy of formation for the HNO3 NO₂(g) +1/4 O₂(g) + 1/2 H₂ O()) HNO3(aq) Given: 1/2 N₂(g) + O₂(g) → NO₂(g) AH- +33.2 kJ 1/2 H₂(g) + 1/2 N₂(g) + 3/2 O₂(g) → HNO3(aq) AH= -202.3 kJ H₂(g) +1/2 O₂(g) →H₂ O((g)) AH= -285.8 kJ
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