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Calculate the [H3O+] and pH of the polyprotic H3C6H5O7 with an initial concentration 0.125 M. I...

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Chemistry

Calculate the [H3O+] and pH of the polyprotic H3C6H5O7 with aninitial concentration 0.125 M. I got 0.011, but apparently it iswrong even though I added the three dissociated concentrations.Help would be very much appreciated! Here are the Ka values:Ka1=7.4*10^-4, Ka2=1.7*10^-5 Ka3=4.0*10^-7

Answer & Explanation Solved by verified expert
4.1 Ratings (491 Votes)
For the first dissociation of the acid H3C6H5O7 H2C6H5O7aq Haq Ka1 74104 InitconM 0125 0 0 ChangeM 0125x 0125x 0125x eqmConM01251 x    See Answer
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