The following table gives the acid-dissociation constant values, Ka, for carboni

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The following table gives the acid-dissociation constant values, Ka, for carbonic acid. H2CO3, and phosphoric acid, H3PO4. The two most important inorganic blood buffers (acid-base conjugate pairs) are the phosphoric acid and carbonic acid systems. The pH of normal blood is 7.40. At a pH of 7.40, what is the ratio of the molar concentrations of PO43- to HPO42- ? Express your answer using two significant figures. At a pH of 7.40, what is the ratio of the molar concentrations of HPO42- to H2PO4- ? Express your answer using two significant figures. At a pH of 7.40, what is the ratio of the molar concentrations of H2PO4- to H3PO4 ? Express your answer using two significant figures. At a pH of 7.40, what is the ratio of the molar concentrations of CO32- to HCO3-? Express your answer using two significant figures. At a pH of 7.40, what is the ratio of the molar concentrations of HCO3- to H2CO3? Express your answer using two significant figures. This part will be visible after you complete previous item(s).

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