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Consider these three reactions as the elementary steps in the mechanism for a chemical reaction. (i) H2(g) + NO(g) à H2O(g) + N(g) Ea = 436 kJ ∆H = –491 kJ (ii) N(g) + NO(g) à N2(g) + O(g) Ea = 625 kJ ∆H = –312 kJ ( iii) O(g) + H2(g) à H2O(g) Ea = 1690 kJ ∆H = +131 kJ What is the ∆H for the overall reaction? Overall, is it endothermic or exothermic

Consider these three reactions as the elementary steps in the mechanism for a chemical reaction. (i) H2(g) + NO(g) à H2O(g) + N(g) Ea = 436 kJ ∆H = –491 kJ (ii) N(g) + NO(g) à N2(g) + O(g) Ea = 625 kJ ∆H = –312 kJ ( iii) O(g) + H2(g) à H2O(g) Ea = 1690 kJ ∆H = +131 kJ What is the ∆H for the overall reaction? Overall, is it endothermic or exothermic

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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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Consider these three reactions as the elementary steps in the mechanism for a chemical reaction.

(i) H2(g) + NO(g) à H2O(g) + N(g) Ea = 436 kJ ∆H = –491 kJ

(ii) N(g) + NO(g) à N2(g) + O(g) Ea = 625 kJ ∆H = –312 kJ (

iii) O(g) + H2(g) à H2O(g) Ea = 1690 kJ ∆H = +131 kJ

What is the ∆H for the overall reaction? Overall, is it endothermic or exothermic?

1. Consider these three reactions as the elementary steps in the mechanism for a chemical reaction. (i) H2(g) + NO(g)→ H20(g) + N(g) (ii) N(g) + NO(g) → N2(g) + O(g) (iii) O(g) + H2(g) → H20(g) Ea = 436 kJ AH = -491 kJ Еа 3D 625 kJ Ea = 1690 kJ AH = -312 kJ AH = +131 kJ %3D
Transcribed Image Text:1. Consider these three reactions as the elementary steps in the mechanism for a chemical reaction. (i) H2(g) + NO(g)→ H20(g) + N(g) (ii) N(g) + NO(g) → N2(g) + O(g) (iii) O(g) + H2(g) → H20(g) Ea = 436 kJ AH = -491 kJ Еа 3D 625 kJ Ea = 1690 kJ AH = -312 kJ AH = +131 kJ %3D
a. What is the AH for the overall reaction? Overall, is it endothermic or exothermic?
Transcribed Image Text:a. What is the AH for the overall reaction? Overall, is it endothermic or exothermic?
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