Tyrosine is a triprotic weak acid, with pKa1=2.41, pKa2=8.67, and pKa3=11.01. a) calculate the final [OH-] of a solution that starts with .30M of the fully basic form. Do not assume the concentration of base is constant. b) at what pH range(s) would tyrosine act best as a buffer? c) calculate the pH of a solution at equilibrium which started with 0.043M at the monoprotonated H2A- form *Please show all work and not just answers, I'm looking to understand how to solve problems like these! TIA
Tyrosine is a triprotic weak acid, with pKa1=2.41, pKa2=8.67, and pKa3=11.01. a) calculate the final [OH-] of a solution that starts with .30M of the fully basic form. Do not assume the concentration of base is constant. b) at what pH range(s) would tyrosine act best as a buffer? c) calculate the pH of a solution at equilibrium which started with 0.043M at the monoprotonated H2A- form *Please show all work and not just answers, I'm looking to understand how to solve problems like these! TIA
Chapter15: Complex Acid/base Systems
Section: Chapter Questions
Problem 15.16QAP
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Tyrosine is a triprotic weak acid, with pKa1=2.41, pKa2=8.67, and pKa3=11.01.
a) calculate the final [OH-] of a solution that starts with .30M of the fully basic form. Do not assume the concentration of base is constant.
b) at what pH range(s) would tyrosine act best as a buffer?
c) calculate the pH of a solution at equilibrium which started with 0.043M at the monoprotonated H2A- form
*Please show all work and not just answers, I'm looking to understand how to solve problems like these! TIA
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