The graph below represents the titration of an amino acid with NaOH solution. View the titration...

 

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The graph below represents the titration of an amino acid with NaOH solution. View the titration and answer the questions below (parts a through e). (a) At what pH are about 1/2 of the carboxyl groups ionized? Number (b) Where does the amino acid have a net charge of +1? below pH 2.34 at pH = 2.34 at pH = 6.01 at pH = 9.69 above pH 9.69 (c) At what point has enough base been added to react with 1/2 of the COOH groups? QU Number 7 equivalents OH™ 12.00, '00 ,00, 0 pH = Number 12 11 10 9 8 7 pH 8 5 4 3 2 pk = 2.34 0.5 pl = 8.01 pk = 9.69 1.0 OH-(equivalents) Previous Give Up & View Solution 1.5 2.0 Check Answer Map dob continued below... Next Exit (c) At what point has enough base been added to react with ¹/2 of the COOH groups? Number 0 1.53 9.00 10.5 6.01 9.69 3.00 equivalents OH™ (d) At which of the following pH values does the amino acid have the best buffering capacity? (e) What is the pl (isoelectric point)? Number pH= Number 11 De graph below is provided for ease of answering parts (d) and (e). It is a still image of the titration above. 10 8 7 pH s 5 16 pK,-2.34 pl-6.01 1.0 PK-9.69 0.5 OH' (equivalents) 1.5 Мар duu 2.0 continued below... The graph below represents the titration of an amino acid with NaOH solution. View the titration and answer the questions below (parts a through e). (a) At what pH are about 1/2 of the carboxyl groups ionized? Number (b) Where does the amino acid have a net charge of +1? below pH 2.34 at pH = 2.34 at pH = 6.01 at pH = 9.69 above pH 9.69 (c) At what point has enough base been added to react with 1/2 of the COOH groups? QU Number 7 equivalents OH™ 12.00, '00 ,00, 0 pH = Number 12 11 10 9 8 7 pH 8 5 4 3 2 pk = 2.34 0.5 pl = 8.01 pk = 9.69 1.0 OH-(equivalents) Previous Give Up & View Solution 1.5 2.0 Check Answer Map dob continued below... Next Exit (c) At what point has enough base been added to react with ¹/2 of the COOH groups? Number 0 1.53 9.00 10.5 6.01 9.69 3.00 equivalents OH™ (d) At which of the following pH values does the amino acid have the best buffering capacity? (e) What is the pl (isoelectric point)? Number pH= Number 11 De graph below is provided for ease of answering parts (d) and (e). It is a still image of the titration above. 10 8 7 pH s 5 16 pK,-2.34 pl-6.01 1.0 PK-9.69 0.5 OH' (equivalents) 1.5 Мар duu 2.0 continued below...

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O At R PH Pkay PI coor get ionized 2 COOH Cationic PH234 OH 234 69 ... View the full answer