A 75.0 mL solution of 0.132 M potassium alaninate (H2NC2H5CO2K) is titrated with 0.132 M HCl....
A 75.0 mL solution of 0.132 M potassium alaninate (H2NC2H5CO2K) is titrated with 0.132 M HCl. The pKa values for the amino acid alanine are 2.344 (pKa1) and 9.868 (pKa2), which correspond to the carboxylic acid and amino groups, respectively.
The alaninate ion is the basic form of the diprotic amino acid alanine. The alaninate ion reacts with a strong acid to form the neutral, amphiprotic, intermediate species at the first equivalence point.
The intermediate species then reacts with the strong acid to form the positively charged, acidic species at the second equivalence point.
PLEASE ANSWER ALL PARTS. THANK YOU!
Homework Answers
At second equivalence point ;
pH = (pKa1 +pKa2)/2 = (2.344+9.868)/2 = 6.106
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A 75.0 mL solution of 0.132 M potassium alaninate (H2NC2H5CO2K)
is titrated with 0.132 M HCl....
A 50.0 mL solution of 0.174 M potassium alaninate (H2NC2H5CO2K) is titrated with 0.174 M HCl....
A 50.0 mL solution of 0.174 M potassium alaninate (H2NC2H5CO2K) is titrated with 0.174 M HCl. The pKa values for the amino acid alanine are 2.344 (pKa1) and 9.868 (pKa2), which correspond to the carboxylic acid and amino groups, respectively. a. Calculate the pH at the first equivalence point b. Calculate the pH at the 2nd equivalence point
A 70.0 mL solution of 0.120 M potassium alaninate (H2NC2H5CO2K) is titrated with 0.120M HCL. The...
A 70.0 mL solution of 0.120 M potassium alaninate (H2NC2H5CO2K) is titrated with 0.120M HCL. The pKa values for the amino acid alanine are 2.344 (pKa1) and 9.868 (pKa2), which correspond to the carboxylic acid and amino groups, respectively. a) Calculate the pH at the first equivalence point. pH = b) Calculate the pH at the second equivalence point. pH =
A 55.0 mL solution of 0.111 M potassium alaninate ( H2NC2HCO2K) is titrated with 0.111 M...
A 55.0 mL solution of 0.111 M potassium alaninate ( H2NC2HCO2K) is titrated with 0.111 M HCI. The pKa values for the amino acid alanine are 2.344 (pKal) and 9.868 (pKa2), which correspond to the carboxylic acid and amino groups, respectively. Calculate the pH at the first equivalence point. CH3 H2N Potassium Alaninate Calculate the pH at the second equivalence point. pH
CH3 A 60.0 mL solution of 0.183 M potassium alaninate (H2NC,H,CO,K) is titrated with 0.183 M...
CH3 A 60.0 mL solution of 0.183 M potassium alaninate (H2NC,H,CO,K) is titrated with 0.183 M HCl. The pKa values for the amino acid alanine are 2.344 (pKal) and 9.868 (pKa2), which correspond to the carboxylic acid and amino groups, respectively. H2NCH——0 Calculate the pH at the first equivalence point. Potassium Alaninate pH = Calculate the pH at the second equivalence point. pH = ||
сн. A 75.0 mL solution of 0.146 M potassium alaninate (H, NC,H,CO,K) is titrated with 0.146...
сн. A 75.0 mL solution of 0.146 M potassium alaninate (H, NC,H,CO,K) is titrated with 0.146 M HCl. The pK values for the amino acid alanine are 2.344 (PK) and 9.868 (pK22), which correspond to the carboxylic acid and amino groups, respectively. H2N- CH-C- Calculate the pH at the first equivalence point. Potassium Alaninate pH = Calculate the pH at the second equivalence point. pH =
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A 55.0 mL solution of 0.111 M potassium alaninate ( H2NC2HCO2K) is titrated with 0.111 M HCI. The pKa values for the amino acid alanine are 2.344 (pKal) and 9.868 (pKa2), which correspond to the carboxylic acid and amino groups, respectively. Calculate the pH at the first equivalence point. CH3 H2N Potassium Alaninate Calculate the pH at the second equivalence point. pH
CH3 A 60.0 mL solution of 0.183 M potassium alaninate (H2NC,H,CO,K) is titrated with 0.183 M HCl. The pKa values for the amino acid alanine are 2.344 (pKal) and 9.868 (pKa2), which correspond to the carboxylic acid and amino groups, respectively. H2NCH——0 Calculate the pH at the first equivalence point. Potassium Alaninate pH = Calculate the pH at the second equivalence point. pH = ||
сн. A 75.0 mL solution of 0.146 M potassium alaninate (H, NC,H,CO,K) is titrated with 0.146 M HCl. The pK values for the amino acid alanine are 2.344 (PK) and 9.868 (pK22), which correspond to the carboxylic acid and amino groups, respectively. H2N- CH-C- Calculate the pH at the first equivalence point. Potassium Alaninate pH = Calculate the pH at the second equivalence point. pH =
In a titration, 25 mL of 0.10 M weak diprotic acid solution was titrated by 0.10 M sodium hydroxide, NaOH, and produced a titration curve listed below. (20 points total) 14,0 3. 12.0 10.0 8.0 pH 6.0 4.0 2.0 10.0 5.0 20.0 30.0 15.0 25.0 Volume of 0.100 M NaOH, mL The acid used in above titration is a weak diprotic acid. Briefly explain how you know it's diprotic from looking at the titration curve and how you know a...
Mass potassium hydrogen phthalate: .459 g
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Strong Base titrated into weak acid
1. ml base added at equivalence point?
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