Consider an equilibrium mixture of four chemicals (A, B, C, and D) reacting in a closed flask according to the equation:
A + B <--> C + D
a) You add more A to the flask. How does the concentration of each chemical compare to its original concentration after equilibrium is reestablished?
b) You have the original set-up at equilibrium, and add more D to the flask. How does the concentration of each chemical compared to its original concentration after equilibrium is re-established?