QuestionWhat happens to the system when $\mathrm{NO}_{2}$ is added to the equilibrium: $$2 \mathrm{NO}(\mathrm{g})+\mathrm{O}_{2}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}_{2}(\mathrm{~g})+113.06 \mathrm{~kJ}?$$ A. Shift right, decrease $\mathrm{NO}_{2}$. B. Shift left, increase $\mathrm{NO}$ and $\mathrm{O}_{2}$. C. Shift left, decrease $\mathrm{NO}$ and $\mathrm{O}_{2}$. D. Shift right, increase $\mathrm{NO}_{2}$.