4. The equilibrium 25°C. w 4CO(g)? A) 2.0Ã10-5 B) 2.5Ã10" C) 5.0x10" D) 5.0Ã10- E) 2.0Ã10-3 onstant for the reaction Ni(s) +4Coe)Ni(COjg) is 5.0 10t at ibrium constant for the reaction Ni(CO) Nis) What is the equil t Calculatek, for the reaction 2NOCI(g)ã¼2NO(g) + Ch(g) at 40 ycirk at 400°C for this reaction is 2.1 x 102 A) 2.1 x 10-2 B) 1.7 x 10 C) 0.70 D) 1.2 E) 3.8 x 104 5 an experiment, 0.625 mole of N204 was introduced into a 5.00 L vessel and was allowed to decompose until equilibrium was reached. The concentration of N204 at equilibrium was 0.0750 M. Calculate Ke for the reaction. A) 7.5 B) 0.125 C) 0.0750 D) 0.10 E) 0.050 6. The brown gas NO: and the colorless gas N2O, exist in equilibrium, 2NONO. In Kp for the reaction CO2(g) + C(s) ë 2CO(g) is 1.47 at 727°C. Calculate Kc at this temperature 7. A) 1.47 B) 121 C) 0.0246 D) 0.0179 E) 87.7