14.49 The following pictures represent the initial and equilibrium states for the exothermic reaction of solid A (red) with gaseous B2 (blue) to give gaseous AB : Initial state Equilibrium state (a) Write a balanced chemical equation for the reaction. (b) Will the number of AB molecules in the equilibrium mixture increase, decrease, or remain the same after each of the following changes? Explain. (1) Increasing the partial pressure of B2 (2) Adding more solid A (3) Increasing the volume (4) Increasing the temperature