At 25 °C, the equilibrium constant Kc = 65 for the reaction
2A (aq) = B (aq) + C (aq) at 298K.
If 2.50 mol of A is added to enough water to prepare 1.00 L of solution, what will the equilibrium concentration of A be?
a. 0.15 M
b. 1.18 M
c. 0.68 M
d. 0.24 M