Consider the following reaction occurring in a closed chemical system. Assume that this reaction is at equilibrium and that, in general, the reaction to the right is favored: CH₃CH₂OH + 3O₂ → 2CO₂ + 3H₂O, ΔH = -1235 kJ/mol What type of chemical reaction is this? If more CH₃CH₂OH is added to the system, how will the reaction shift to reach equilibrium again?