The elementary reaction 2 NO₂(g)→ 2 NO(g)+ O₂(g) Is second order in NO₂ and the rate constant at 501 K is 7.93 × 10^-3 M^-1s^-1.The reaction half-life at this temperature when [NO₂]₀ = 0.45 M is ________ s.

Question

Quizplus · Accepted Answer

For a second-order reaction, the half-life is given by t₁/₂ = 1 / (k [NO₂]₀). Substituting the given values, t₁/₂ = 1 / (7.93 × 10⁻³ M⁻¹s⁻¹ × 0.45 M) = 280 s.

The Elementary Reaction 2 NO2(g)→ 2 NO(g)+ O2(g)

The Elementary Reaction 2 NO₂(g)→ 2 NO(g)+ O₂(g)