At equilibrium at 1200°C, [I2] = 9.5 ×10–2 Mand [I] = 3.2 × 10–2 M.What is the value of Keq for this system?

For the equilibrium I₂ ⇌ 2I, the equilibrium expression is Kₑq = [I]²/[I₂]. Substituting the concentrations gives (3.2 × 10⁻²)²/(9.5 × 10⁻²) ≈ 1.1 × 10⁻². Therefore, the correct choice is 1.1 × 10⁻².

AI-written and checked against the verified answer.