First, we can qualitatively describe the content of the reaction mixture by looking at the magnitude of Kc.Second, we can determine the direction in which a reaction will proceed by comparing Kc to the value of the reaction quotient, Q, which has the same expression as Kc but uses nonequilibrium values.Finally, we can determine equilibrium concentrations given the initial concentrations and the value of Kc.When Kc is very large (>102), the equilibrium mixture is mostly products. When Kc is very small ( 0.01, at equilibrium there will be substantial amounts of both reactants and products.Reaction Quotient, Q The reaction quotient has the same form as the equilibrium constant, but uses initial concentrations for its value.When Kc > Q, the reaction proceeds to the right.When Kc < Q, the reaction proceeds to the left.Here the numerator must increase; more products must be produced.Here the denominator must increase; more reactants must be produced.When Kc = Q, the reaction is at equilibrium.Calculating Equilibrium Concentrations 1. When all but one equilibrium concentration and the value of Kc are known.2. When the value of Kc and the initial concentrations are known. a. When the Kc expression is a perfect square: solving a linear equation. b. When the Kc expression is not a perfect square: solving a quadratic equation.Nickel(II) oxide can be reduced to the metal by treatment with carbon monoxide.CO(g) + NiO(s) ⇌ CO2(g) + Ni(s)If the partial pressure of CO is 100. mmHg and the total pressure of CO and CO2 does not exceed 1.0 atm, will this reaction occur at 1500 K at equilibrium? (Kp = 700. at 1500 K.)