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.
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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.