A) the equilibrium shifts to the left, producing more h3o+.
b) the equilibrium shifts to the left, producing more h3po4 (aq).
c) the equilibrium shifts to the right, creating more h3o+ (aq).
d) the equilibrium shifts to the right, creating more h3po4 (aq).

these are just options, what is the main question, without it, we cannot determine which option is correct, so please repost the question.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

elements make up everything, and they combine to make compounds.

the answer is c