A quantity of HI was sealed in a tube, heated to 425C, and held at this temperature until equilibrium is reached. The concentration of HI in the tube at equilibrium was found to be 0.0706 moles/liter. Calculate the equilibrium concentration of H2 (and I2 ). For the reaction H2 (g) + I2 (g) 2HI(g), Kc = 54.6 at 425C.