Direction: Use Hess' Law in determining the change in enthalpy of the chemical reaction. Follow the steps that you have learned in this module. Use a separate sheet in writing your answer. Calculate the standard enthalpy of formation, AH° for NO2(e), produced from NO(g) and O(g) according to the following reaction: NO(2) + O(g) → NO2(8) Reactions: NOg) + O3 (g) → NO2 (g) + O2 (g) 3/2 O2 (g) AH° = -198.9 kJ 03 AH° = -142.3 kJ (g) 20 O2 (2)* + 0 AH° = 495.0 kJ (g) NO NO2 (g) AH° = ? (g) (g) →

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Chapter1: Chemical Foundations
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Direction: Use Hess' Law in determining the change in enthalpy of the chemical reaction.
Follow the steps that you have learned in this module. Use a separate sheet in writing your
answer.
and
Calculate the standard enthalpy of formation, AH° for NO23), produced from NO(g)
O(g) according to the following reaction:
NO(g)+ O(g)
NO28)
Reactions:
NO() + O3 (g)
NO2 (2)
+ O2 (g)
AH° = -198.9 kJ
03
3/2 O2 (g)
AH° = -142.3 kJ
(g)
20
AH° = 495.0 kJ
O2
(g)
(g)
NO
NO2 (g)
ΔΗ
+0 (g)→
(g)
Transcribed Image Text:Direction: Use Hess' Law in determining the change in enthalpy of the chemical reaction. Follow the steps that you have learned in this module. Use a separate sheet in writing your answer. and Calculate the standard enthalpy of formation, AH° for NO23), produced from NO(g) O(g) according to the following reaction: NO(g)+ O(g) NO28) Reactions: NO() + O3 (g) NO2 (2) + O2 (g) AH° = -198.9 kJ 03 3/2 O2 (g) AH° = -142.3 kJ (g) 20 AH° = 495.0 kJ O2 (g) (g) NO NO2 (g) ΔΗ +0 (g)→ (g)
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