What is the concentration of $[H_3O^+]$ in distilled water at $298 \; K$?

  • A
    $1 \times 10^{-6} \; M$
  • B
    $1 \times 10^{-8} \; M$
  • C
    $1 \times 10^{-7} \; M$
  • D
    $1 \times 10^{-14} \; M$

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