Identify the conjugate acid-base pair from the following equilibrium reaction.
$HSO_{3(aq)}^{-} + H_3O_{(aq)}^{+} \rightleftharpoons H_2SO_3 + H_2O$

  • A
    $H_2SO_3$ and $HSO_3^{-}$
  • B
    $HSO_3^{-}$ and $H_3O^{+}$
  • C
    $H_2SO_3$ and $H_2O$
  • D
    $H_3O^{+}$ and $H_2SO_3$

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