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college chemistry

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What is the ratio of KC2H3O2 and HC2H3O2 in a buffer with a pH of 5.25? Ka = 1.8 x10-5?

  • college chemistry -

    Use the Henderson-Hasselbalch equation.

  • college chemistry -

    I understand that is the equation but I can not figure out how I get the numbers. I know the equation is

    ph= pka + log [salt]/[acid]

    I know pka is -logKa but I do not know how to get the numbers for the [salt] or the [acid] to divide. I have an extremely
    HORRENDOUSLY bad college professor who pretty much says he is trying to weed out the potentially bad nurses that cannot do these things.

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