Answer:
E) all of the above
Explanation:
The pressure is a measure of the force of the gases, so when the number of moles of gases increases, the pressure also increases (in an isothermic process). By the principle of Le Chatelier, if the pressure increases, the equilibrium must be dislocated to form the fewer moles of gases compounds.
So, the increase in pressure only will not affect the concentrations of the reactants if there are no gases compounds, or if there is the same number of moles gases in reactants and products. So, in all of the reactions, a change in the temperature will change the equilibrium.
