Consider the reaction. A(aq)2B(aq)K=5.00106at500K If a 5.20M sample of A is heated to 500K, what is the concentration of B at equilibrium? At a certain temperature, the equilibrium constant for the chemical reaction shown is 3.05103. At equilibrium, the concentration of AB is 3.225M, the concentration of BC is 2.725M, and the concentration of AC is 0.300M. Calculate the concentration of B at equilibrium. AB(aq)+BC(aq)AC(aq)+2B(aq)