The addition of small amounts of either acid or base to a buffer solution causes only small changes in $pH$ because the buffer solution

  • A
    Does not contain either $H_3O^{+}$ or $OH^{-}$
  • B
    Contains large amounts of both $H_3O^{+}$ and $OH^{-}$
  • C
    Reacts with the added acid or base
  • D
    Contains a strong acid and the salt of the same strong acid

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