State which is greater in amount: reactants or products, based on the given equilibrium constant, K.
a) N₂ (g) + O₂ (g) ⇌ 2 NO (g) K = 1.0 x 10²⁰
b) 2 CO (g) + O₂ (g) ⇌ 2 CO₂ (g) K = 2.2 x 10^-22
c) 2 BrCl (g) ⇌ Br₂ (g) + Cl₂ (g) K = 1

• A. a) products, b) products, c) reactants
• B. a) reactants, b) products, c) reactants
• C. a) products, b) reactants, c) equal
• D. a) reactants, b) products, c) equal

Answer: (C)

Verified step by step guidance

1. Understand the concept of the equilibrium constant (K). It is a measure of the ratio of the concentration of products to reactants at equilibrium. A large K value indicates that the equilibrium favors the formation of products, while a small K value indicates that the equilibrium favors the formation of reactants.
2. For part (a), the equilibrium constant K is 1.0 x 10^20, which is a very large number. This suggests that the concentration of products (NO) is much greater than the concentration of reactants (N2 and O2) at equilibrium.
3. For part (b), the equilibrium constant K is 2.2 x 10^-22, which is a very small number. This indicates that the concentration of reactants (CO and O2) is much greater than the concentration of products (CO2) at equilibrium.
4. For part (c), the equilibrium constant K is 1, which means the concentrations of reactants (BrCl) and products (Br2 and Cl2) are equal at equilibrium.
5. Based on the analysis of the equilibrium constants, the correct answer is: a) products, b) reactants, c) equal.