What is the pKa of the carboxylate group in beta-alanine if a 0.0005M solution has a...

Question

Question

What is the pKa of the carboxylate group in beta-alanine if a 0.0005M solution has a pH of 4?

science chemistry

Answer 1

Answer #1

Answer 2

Similar Homework Help Questions

What is the pH of alanine solution in which a-amino group is one-half dissociated? pKa values...

What is the pH of alanine solution in which a-amino group is one-half dissociated? pKa values are pK (-COOH) 2.43 and pK(-NH3+) 9.69, respectively.
Alanine is a diprotic amino acid with a pka = 2.344 for the carboxylic group and...

Alanine is a diprotic amino acid with a pka = 2.344 for the carboxylic group and a pka = 9.868 for the ammonium group. At pH = 6.32, what is the principal species in solution? a. H2L+ b. c. HL d. H3L2+ e. L2-
A biochemist wishes to use alanine to buffer a solution at pH 2.94. Alanine has two...

A biochemist wishes to use alanine to buffer a solution at pH 2.94. Alanine has two ionizable groups, with pKa values of 2.34, and 9.6. She has 200 ml of a 0.1 M alanine solution at pH 9.6. What volume of 1.0 M HCl must she add to bring the pH to 2.94?

The amino group of the lysine side chain has a pKa of 12.5. At pH 7.4,...

The amino group of the lysine side chain has a pKa of 12.5. At pH 7.4, what is the molecular form of the amino group? Can this group exist in a hydrophobic pocket? If so, how would the pKa change? If the amino group were next to carboxylate of glutamate in a hydrophobic pocket how would the pKa change?
For alanine, the pKa(COOH)=2.3, pKa(NH3)=9.7 Select the true answers by referring to the structure of alanine,...

For alanine, the pKa(COOH)=2.3, pKa(NH3)=9.7 Select the true answers by referring to the structure of alanine, shown above at pH= 7.0. Please note the pH at which the titration was started. True False Alanine has a buffer region near pH 10. True False At point B, the net charge is +1. True False At point B, the net charge is +0.5 True False At the isoelectric point, C, pH = 6.0 True False Alanine has a buffer region near pH 6. True False At the isoelectric...
Alanine (H2NCH(CH3) is a common amino acid that has a basic amino group. A) Write an...

Alanine (H2NCH(CH3) is a common amino acid that has a basic amino group. A) Write an equilibrium for the reaction of alanine acting as a Bronsted base with a water molecule. (Ka of protonated amino group = 1.349 x 10 -10 B) Calculate the Kb of the amino group C) Calculate the pOH of a 0.025M solution of alanine in water D) Calculate the pH value of a 0.025M solution of alanine in water E) Describe how the equilibrium would...

The pKa of the alpha-carboxyl group of phenylalanine is 1.83, and the pKa of its alpha-amino...

The pKa of the alpha-carboxyl group of phenylalanine is 1.83, and the pKa of its alpha-amino group is is 9.13. Calculate the average net charge on phenylalanine if it is in a solution that has a pH of 8.40.
The pKa of the α-carboxyl group of serine is 2.21, and the pKa of its α-amino...

The pKa of the α-carboxyl group of serine is 2.21, and the pKa of its α-amino group is is 9.15. Calculate the average net charge on serine if it is in a solution that has a pH of 8.00
Which of the following functional groups has a pKa value of 6.14? A. carboxylic acid/carboxylate B....

Which of the following functional groups has a pKa value of 6.14? A. carboxylic acid/carboxylate B. imidazolium/imidazole C. ammonium/ammonia

The amino group of Gly has a pka of 9.6. What is the nh2/nh3+ ratio when...

The amino group of Gly has a pka of 9.6. What is the nh2/nh3+ ratio when ph of a gly solution is 8.6? a. 1 b. .5 c. 10 d. .1 the answer is 0.1 but could you please explain how this is done