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Textbook Expert
Textbook ExpertVerified Tutor
23 Oct 2021

Given information

From Appendix IIB

   

    

Step-by-step explanation

Step 1.

The standard state of nitrogen is and the standard state of hydrogen is . Therefore, the standard enthalpy of formation of nitric oxide involves these species as reactants.

The chemical equation for the formation of  is:

    

The given reaction contains two nitrogen and two oxygen atoms on the reactant side and one nitrogen atom and two oxygen atoms on the products side.

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