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In experiment concerning potentiometric determination of puriy and Ka of KHP, we obtained an experimental pKa of 5.04 and when compared with the theoretical pKa of 5.51, we obtained a % relative error of 192%.
Could this error mean that a cerain impurity in the KHP sample effected this deviation?

  • chemistry - ,

    I think an impurity could introduce an error in this determination.

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