For the reaction $2N_2O_{5(g)} \rightleftharpoons 4NO_{2(g)} + O_{2(g)}$ in a closed vessel,the concentration of $NO_2$ increases by $2.0 \times 10^{-2} \, mol \, L^{-1}$ in $5 \, s$. Calculate the rate of reaction.

  • A
    $4 \times 10^{-3} \, mol \, L^{-1} \, s^{-1}$
  • B
    $10^{-3} \, mol \, L^{-1} \, s^{-1}$
  • C
    $2 \times 10^{-3} \, mol \, L^{-1} \, s^{-1}$
  • D
    $10^{-2} \, mol \, L^{-1} \, s^{-1}$

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