Sulfur dioxide reacts with oxygen at 2 atmospheres pressure. The forward reaction is exothermic. The equation for the reaction is shown. 2SO2(g) + O2(g) = 2SO3(g) The reaction reaches equilibrium. The pressure is then doubled. How and why does the amount of sulfur trioxide formed change? A B D amount of sulfur trioxide decreases decreases increases increases reason the forward reaction is exothermic there are fewer molecules on the right the forward reaction is exothermic there are fewer molecules on the right Activate Windows​