From the calculations, the equilibrium constant is 216. Option B
The equilibrium constant can depict the amount of reactants that is converted into products at a given time. We know that if thus number is large and positive, then it means that the reaction would proceed to the right.
Thus, we have the equation of the reaction as; CO(g) + Cl2(g) <--> CoCl2(g) and we know that;
K = [CoCl2]/ [CO] [Cl2]
[CoCl2] = concentration of CoCl2
[CO] = concentration of CO
[Cl2] concentration of Cl2
Substituting the values into the equation;
K = 0.14/ 1.2 x 10-2 * 0.054
K = 216
Learn more about equilibrium constant:https://brainly.com/question/10038290
#SPJ1