D. Follow the Rules of the Law! 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 (3), produced from NO(8) and O(e) according to the following reaction: NO (3) + O (g) → NO2 (g) Reactions: NO + Os (g → NO2 (s) Os → 3/2 02 (8 → 20 → NO2 + O2 (E) AH° = -198.9 kJ AH° = -142.3 kJ AH° = 495.0 kJ NO + O (g) (2) AH° = ? (g)

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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D. Follow the Rules of the Law!
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 (8), produced from NO(8) and O(g) according to the following reaction:
NO (B) + O (g) → NO2 (g)
Reactions:
AH° = -198.9 kJ
AH° = -142.3 kJ
AH° = 495.0 kJ
+ O2 isl
→ NO2
3/2 02 (s)
→ 20
NO2 (2
NO + Os
O3
(B)
+
AH° = ?
NO
Transcribed Image Text:D. Follow the Rules of the Law! 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 (8), produced from NO(8) and O(g) according to the following reaction: NO (B) + O (g) → NO2 (g) Reactions: AH° = -198.9 kJ AH° = -142.3 kJ AH° = 495.0 kJ + O2 isl → NO2 3/2 02 (s) → 20 NO2 (2 NO + Os O3 (B) + AH° = ? NO
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