Textbook Problem

. Suppose the reaction system
${\text{CH}}_{\text{4}}\left(g\right)+{\text{2O}}_{\text{2}}\left(g\right)\rightleftharpoons {\text{CO}}_{\text{2}}\left(g\right)+{\text{2H}}_{\text{2}}\text{O}\left(l\right)$   has already reached equilibrium. Predict the effect of each of the following changes on the position of the equilibrium. Tell whether the equilibrium will shift to the right, will shift to the left, or will not be affected.
a. Any liquid water present is removed from the system.
b. CO₂is added to the system by dropping a chunk of dry ice into the reaction vessel.
c. The reaction is performed in a metal cylinder fined with a piston. and the piston is compressed to decrease the total volume of the system.
d. Additional O₂(g) is added to the system from a cylinder of pure O₂.