For a weak base $BOH$ at $25\,^oC$,the dissociation constant $K_b$ is $1.0 \times 10^{-12}$. The concentration of hydroxyl ions in its $0.01\,M$ aqueous solution will be:

  • A
    $2.0 \times 10^{-6}\,M$
  • B
    $1.0 \times 10^{-5}\,M$
  • C
    $1.0 \times 10^{-6}\,M$
  • D
    $1.0 \times 10^{-7}\,M$

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