9) Given the reaction: N2(g) + O2(g) + 182.6 kJ → 2 NO(g) What is the heat of formation of nitrogen (II) oxide in kJ/mole? A) AH = -182.6 B) AH = -91.3 C) AH = 91.3 Show D) AH = 182.6 PLEASE HELP please

The heat of formation of nitrogen (II) oxide : +91.3 kJ/mol

Given

Reaction

N2(g) + O2(g) + 182.6 kJ → 2 NO(g)

Required

The heat of formation

Solution

In the above reaction, the heat of the reaction is located on the reactant side which indicates that the formation of nitric oxide requires heat (endothermic reaction).

In the above reaction the heat required to form 2 moles of NO, so the heat required for each mole is:

+182.6 kJ : 2 = =+91.3 kJ/mol

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