Write the ice table and calculate the equilibrium constant

Question

For the following reaction at a certain temperature: 2CO₂(g) D 2CO(g) + O₂(g)

(a) In a 5.0 L container, 50% of 1.0 mole of CO₂ dissociate into CO and O₂ upon reaching equilibrium. Write the ICE table, and calculate the equilibrium constant for this reaction.

(b) After the equilibrium described in (a) being reached, add additional 0.50 mole of CO₂ and 0.50 mole of O₂ to the container, calculate the reaction quotient and determine the direction of the equilibrium shift?