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31.0mL sample of LiOH, concentration unknown, is titrated with .52 M HCl. It takes 42.9 ml of HCl to reach the endpoint. What is the concentration of the base?

  • chemistry -

    mL acid x M acid = mL base x M base.

  • chemistry -

    0.71 M

  • chemistry -

    I don't think you rounded properly. My calculator tells me 0.71961 which I would round to 0.72 to 2 s.f. and to 0.720 to 3 s.f.

  • chemistry -

    ok thanks!

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