What is correct for an acidic aqueous solution?

  • A
    $[H_3O^+] = 10^{-7} \; M$
  • B
    $[H_3O^+] < 10^{-7} \; M$
  • C
    $[H_3O^+] > 10^{-7} \; M$
  • D
    $[H_3O^+] < [OH^-]$

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