This is a multi-part question. Part 1: Citric acid is a natural tri-protic organic acid that...

This is a multi-part question. Part 1: Citric acid is a natural tri-protic organic acid that has the generic formula of H3Cit, with the following Ka's: Ka1=8.4*10^-4, Ka2=1.8*10^-5, and Ka3=4.0*10^-6. If you start with a 0.2424 M solution of Na2HCit, write all of applicable chemical equations and the math equations, including all equilibria and mass and charge balance, that would be necessary to solve this?

Part 2: For the same citric acid problem above, what is the pH of the original Na2HCit solution?

Part 3: Can you use the shortcut equation here, and why?

Part 4: For the same citric acid system shown, what would be the actual molar concentration of all species present at pH=5.10, if you start with the same 0.2424 M Na2HCit solution?

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Expert Solution

queen_honey_blossom answered 1 year ago

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