chemistry

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For each titration of a buffer, how do i calculate how many mLs of titrant were required to obtain a 1.00 pH unit change from the initial pH?

  • chemistry -

    It's difficult sometimes to understand when the questions are so general. Let me make an example. For a buffer in which pKa = 4.75 and pH = 4.75, we have
    4.75 = 4.75 + LOg (base/acid)
    and B/A = 1 or (base) = (acid).

    Now if we change that to 5.75, then
    5.75 = 4.75 + log (base/acid)
    B/A = 10 or (base) = 10*(acid).
    Since these are concns, and you know the mols, M = mols/L and solve for L.

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