2. The equilibrium constant for the production of ammonia, used as fertilizer, is 3.65x 108 at 25 ⁰C. N2(g) + 3 H2(g) ⇋ 2 NH3(g) . Calculate the equilibrium concentration of hydrogen gas, if at equilibrium the concentrations of nitrogen and ammonia are 2.56 M and 5.76 M 3 The equilibrium constant of oxalic acid present in many fruits at 25 ⁰C. is 6.5 x 10-2. The reaction is C2H2O4(aq) ⇋ H + (aq) + C2HO4 – (aq) What is the concentration of H+ at 25⁰C if the concentration of C2H2O4 and C2HO4 – at equilibrium are 3.0111 M and 0.44415 M respectively?