Calculating equilibrium concentrations when the net reaction proceeds forward Consider mixture B, which will cause the net reaction to proceed forward. The change in concentration, x, is negative for the reactants because they are consumed and positive for the products because they are produced. Part B Based on a Kc value of 0.240 and the given data table, what are the equilibrium concentrations of XY,X, and Y , respectively? Express the molar concentrations numerically. No credit lost. Try again. Part C Based on a Kc value of 0.240 and the data table given, what are the equilibrium concentrations of XY,X, and Y, respectively? Express the molar concentrations numerically