What is the concentration of PO43- in a 4.79 M solution of phosphoric acid (H3PO4) at...

What is the concentration of PO₄^3- in a 4.79 M solution of phosphoric acid (H₃PO₄) at equilibrium?

ka1=7.5e-3 ka2=6.2e-8 ka3=4.8e-13

please show work

*It's not 5.93e-4 or 3.44e-19

Expert Solution

Three protonation acid.

Draw the individual steps ice table to find the concentration of H2PO4- , HPO4^2-

queen_honey_blossom answered 2 years ago

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Phosphoric Acid, H3PO4(aq) is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH and the concentrations(M) of all species in a 0.300 M phosphoric acid solution. pKa1= 2.16 pKa2=7.21 pKa3=12.32 [H3PO4]= [H2PO4-]= [HPO4^2-]= [PO4^3-] [H+]= [OH-]= pH=

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