Consider the equilibrium reaction: Mg(OH)2(s)Mg2+(aq)+2OH(aq). Which of the following species when added to the system at equilibrium will disturb equilibrium? Mg(OH)2(s) a and b HCl Consider the following equilibrium reaction: C(s)+O2(g)CO2(g). Which of the following stresses will result in the equilibrium shifting to the right to re-establish equilibrium? neither a or b will disturb equilibrium. decreasing volume increasing pressure