Question

The initial concentration of the first order reaction:

N2O5 (g) → 2NO2 (g) + 1/2 O2 (g)

was 1.24 × 10⁻² mol L⁻¹ at 300 K. The concentration of N2O5 after 60 minutes was 0.20 × 10⁻² mol L⁻¹.

Calculate the rate constant of the reaction at 300 K.

Hint:

The units of the rate constant for a first-order reaction are always \( \text{time}^{-1} \). Ensure your concentrations are in the same units so they cancel out inside the log term.

Answer 1