Question
In: Chemistry
a) 125 mL of a 0.109 M phenylalanine (pKa1 = 1.83, pKa2 = 9.13) solution is...
a) 125 mL of a 0.109 M phenylalanine (pKa1 = 1.83, pKa2 = 9.13) solution is titrated with 0.223 M NaOH. What is the pH after 0 ml of NaOH have been added?
b) 125 mL of a 0.109 M phenylalanine (pKa1 = 1.83, pKa2 = 9.13) solution is titrated with 0.223 M NaOH. What is the pH after 25 ml of NaOH have been added?
c) 125 mL of a 0.109 M phenylalanine (pKa1 = 1.83, pKa2 = 9.13) solution is titrated with 0.223 M NaOH. What is the pH after 75 ml of NaOH have been added?
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
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Apparently the answer is 2.79 but can someone explain this?
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c. 2.79
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10.33) was titrated with 1.42 M NaOH. Calculate the pH at the
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2. At the 1st midpoint.
3. At the 1st stoichiometric point.
4. At the 2nd midpoint.
5. At the 2nd stoichiometric point.
A sample of carbonic acid (0.125 L, 0.199 M, pKa1 = 6.35, pKa2 = 10.33) was...
A sample of carbonic acid (0.125 L, 0.199 M, pKa1 =
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Calculate the pH at the following points:
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At the 1st midpoint.
At the 1st stoichiometric (equivalence) point.
At the 2nd midpoint.
At the 2nd stoichiometric (equivalence) point.
A sample of carbonic acid (0.125 L, 0.154 M, pKa1 = 6.35, pKa2 = 10.33) was...
A sample of carbonic acid (0.125 L, 0.154 M, pKa1 =
6.35, pKa2 = 10.33) was titrated with 1.53 M NaOH.
Calculate the pH at the first and at the second midpoints.
A sample of carbonic acid (0.125 L, 0.199 M, pKa1 = 6.35, pKa2 = 10.33) was...
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6.35, pKa2 = 10.33) was titrated with 1.75 M NaOH.
Calculate the pH at the following points:
Before the titration.
At the 1st midpoint.
375 mL of a .150 M aqueous solution of silver (1) nitrate is mixed with 125...
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Calculate the mass of precipitate that forms and the final
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