The reaction: MgCO₃(s) ⇌ MgO(s) + CO₂(g) is in progress. If number of moles of MgO in the vessel is — Chemical Equilibrium Chemistry Question

💡 Solution & Explanation

MgO is a pure solid, meaning its concentration is not included in the expression for the reaction quotient (Q) or equilibrium constant (Kp = P_CO₂). Therefore, altering its amount has no effect on the partial pressure of CO₂. Therefore, correct answer is D.