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The pH of a 0.0642 M solution of a monoprotic acid is 3.86. s this a strong acid?

the answer is no,
can you explain why??

  • chemistry -

    The pH is 3.86.
    If the acid were a strong acid, it would be completely ionized and the (H) would be 0.0642. The pH would be pH = -log(0.0642) = 1.19. It is 3.86 which means the (H^+) is smaller so it isn't ionized completely.

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