You are titrating 10.00 mL 0.100 M H3PO4 with 0.100 M NaOH. At the point where you have added precisely 12.00 mL of the NaOH titrant, which TWO of the following species are the major species (accounting for reactions between the phosphoric acid and sodium hydroxide)? Which is present at higher concentration, which at lower concentration? Classify each of the species as ONE of the following: N = not a major species L = major species, lower concentration H = major species, higher concentration Enter N, L, or H for each of these. (There should be one L, one H, and the rest should be N. No partial credit.) [A] H+ [B] H3PO4 [C] H2PO4- [D] HPO42- [E] PO43- [F] OH-

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Chapter1: Chemical Foundations
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You are titrating 10.00 mL 0.100 M H3PO4 with 0.100 M NaOH. At the point where you have added precisely 12.00 mL of the NaOH titrant, which TWO of the following species are the major species (accounting for reactions between the phosphoric acid and sodium hydroxide)? Which is present at higher concentration, which at lower concentration? Classify each of the species as ONE of the following: N = not a major species L = major species, lower concentration H = major species, higher concentration Enter N, L, or H for each of these. (There should be one L, one H, and the rest should be N. No partial credit.) [A] H+ [B] H3PO4 [C] H2PO4- [D] HPO42- [E] PO43- [F] OH-

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