Answer
a. The equilibrium mixture contains mostly products.
b. The equilibrium mixture contains mostly products.
c. The equilibrium mixture contains mostly reactants.
Work Step by Step
If $K_c \approx 1$, there is an approximately equal quantity of reactants and products at equilibrium.
If $K_c$ is a large number, like $3.7 \times 10^8$ and $1.1 \times 10^7$, there are mostly products at equilibrium.
If $K_c$ is a small number, like $1.7 \times 10^{-56}$, there are mostly reactants at equilibrium.