Calculate the pH of a 5.0 M H3PO4 solution
and the equilibrium concentrations of the species
H3PO4,
H2PO4-,
HPO42-...
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Chemistry
Calculate the pH of a 5.0 M H3PO4 solutionand the equilibrium concentrations of the speciesH3PO4,H2PO4-,HPO42- and PO43- (ka1 =7.5 x 10-3, ka2 = 6.2 x 10-8, ka3 = 4.8 x10-13)
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4.2 Ratings (760 Votes)
Sol Major contribution of H is from the first ionization of acid and contributions from second and third ionizations of acid are negligible So pH is calculated only from the first ionization of acid Ist ionization reaction H3PO4 H H2PO4
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