Consider the following system at equilibrium where H=87.9kJ, and Kc=0.0120, at 500K : PCl5(g)PCl3(g)+Cl2(g) When 0.37 moles of PCl3(g) are added to the equilibrium system at constant temperature: The value of Kc increases decreases remains the same The value of Qc is greater than Kc is equal to Kc is less than Kc The reaction must run in the forward direction to reestablish equilibrium run in the reverse direction to reestablish equilibrium remain in the current position, since it is already at equilibrium The concentration of PCl3 will increase decrease remain the same