E6B.2(b) From information in the Resource section, calculate the standard Gibbs energy and the equilibrium constant at (i) 25 °C and (ii) 50 °C for the reaction CH4(g) + 3 Cl2(g) ⇌ CHCl3(l) + 3 HCl(g). Assume that the standard reaction enthalpy is independent of temperature. At 298.15 K Δf (CHCl3(l)) = −73.7 kJ mol−1 and Δf (CHCl3(l)) = −134.1 kJ mol−1.