Chapter 14, Problem 14.27P

Interpretation Introduction

Interpretation:

The concentration of $\text{NO}$ increases or decreases at the higher temperature should be identified.

Concept introduction:

For endothermic reaction, the enthalpy of reaction is positive due to the requirement of energy for the reaction to proceed and the enthalpy of reaction is negative due to the release of energy.
Equilibrium constant is the concentration of product raise to its molecular coefficient divided to the concentration of reactant raise to its molecular coefficient and shown as below;
$\text{K=}\frac{\text{[P]}}{\text{[R]}}$