Chemical Kinetics - Rate Laws

The gas-phase reaction 2NO(g) + O2(g) → 2NO2(g) has been studied experimentally. The following initial rate data were obtained at 25°C: Run 1: [NO]₀ = 0.010 M, [O2]₀ = 0.010 M, Rate = 2.5 × 10⁻³ M/s Run 2: [NO]₀ = 0.020 M, [O2]₀ = 0.010 M, Rate = 1.0 × 10⁻² M/s Run 3: [NO]₀ = 0.010 M, [O2]₀ = 0.020 M, Rate = 5.0 × 10⁻³ M/s (a) Determine the rate law. (b) Calculate the rate constant k. (c) Propose a mechanism consistent with this rate law.