The concentration of a reactant changes from $0.1 \, mol \, L^{-1}$ to $0.095 \, mol \, L^{-1}$ in $10 \, s$. Calculate the rate of reaction.

  • A
    $5.0 \times 10^{-4} \, mol \, L^{-1} \, s^{-1}$
  • B
    $5.0 \times 10^{-3} \, mol \, L^{-1} \, s^{-1}$
  • C
    $5.0 \times 10^{-5} \, mol \, L^{-1} \, s^{-1}$
  • D
    $1.0 \times 10^{-4} \, mol \, L^{-1} \, s^{-1}$

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