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(a) Calculate the quotient [H3PO4]/[H2PO4− ] in 0.0463 M KH2PO4. (Assume Kw = 1.01 ✕ 10−14,...

(a) Calculate the quotient [H3PO4]/[H2PO4− ] in 0.0463 M KH2PO4. (Assume Kw = 1.01 ✕ 10−14, Ka1 = 7.11 ✕ 10−3, Ka2 = 6.34 ✕ 10−8, and Ka3 = 4.22 ✕ 10−13.)  


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