7. Calculate △G (in kJ) at 300 K for the reaction CO(g) + 2 H2(g) → CH3OH(l)，in which pco = 2.23 atm, pH2 = 3.0 atm, △Gf°(CO)= -137 kJ/mol, and△Gf° (CH3OH)= -166 kJ/mol. (A) -36.5 (B) -42.2 (C) -33.4 (D) -38.1 (E) -45.6