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Chemistry Acid Question Ka

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Enough of a monoprotic acid is dissolved in water to produce a 0.0165 M solution. The pH of the resulting solution is 2.38. Calculate the Ka for the acid.

  • Chemistry Acid Question Ka -

    Nevermind I figured it out,
    With the equation
    Ka = x^2 / 0.0165 - x

    x = [H+]
    I forgot to do the 0.0165-x in my original calculation, but after doing that I got the correct answer.

  • Chemistry Acid Question Ka -

    That's right. 0.0165-x can't be assumed = 0.0165

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