The reversible reaction occurs in a closed industrial vessel. Which combination of external pressure — Chemical Equilibrium Chemistry Question

💡 Solution & Explanation

The reaction is highly exothermic (heat is released, $+362\text{ kcal}$ on the product side). By Le-Chatelier's principle, low temperatures favor exothermic reactions. Additionally, the reaction results in a decrease in the number of gaseous moles ($\Delta n_g = 1 - 3 = -2$). High pressure favors the direction that produces fewer moles of gas. Thus, the highest pressure ($1000\text{ atm}$) and lowest temperature ($50^\circ\text{C}$) will maximize the yield.