Write an expression for the equilibrium constant of each chemical equation: a. SbCl5(g)SbCl5(g) + Cl2(g) b. 2 BrNO(g)2 NO(g) + Br2(g) c. CH4(g) + 2 H2S(g)CS2(g) + 4 H2(g) d. 2 CO(g) + O2(g)2 CO2(g)