Heating solid sodium bicarbonate in a closed vessel establishes the following equilibrium:...

Heating solid sodium bicarbonate in a closed vessel establishes the following equilibrium:

What would happen to the equilibrium position if (a) some of the CO2 were removed from the system, (b) some solid Na2CO3 were added to the system, (c) some of the solid NaHCO3 were removed from the system? The temperature remains constant.