## Q. 7.10

Le Châtelier’s Principle and Equilibrium Mixtures
Nitrogen reacts with oxygen to give NO:

N$_2$(g) + O$_2$(g) $\rightleftarrows$ 2 NO(g)    ΔH = +43 kcal/mol (+180 kJ/mol)

Explain the effects of the following changes on reactant and product concentrations:
(a) Increasing temperature                          (b) Increasing the concentration of NO
(b) Increasing the concentration of NO, a product, favors the reverse reaction. At equilibrium, the concentrations of both N$_2$ and O$_2$, as well as that of NO, will be higher.