Question

In: Chemistry

Which of the following structures illustrates an amino acid in a solution with a low (acidic) pH?

Which of the following structures illustrates an amino acid in a solution with a low (acidic) pH?

image.png

Solutions

Expert Solution

Proton donar is acid.

Among the given amino acids, the amino acid which can donate protons easily will have strong acid.

a and e are the same. e is the zwitter ion form of a.

c is the proton acceptor.

Among the available amino acids b can donate two protons. Among them b is stron acidic compound (lower PH)


Related Solutions

Which of the following structures illustrates an amino acid in a solution with a high (basic) PH?
Which of the following structures illustrates an amino acid in a solution with a high (basic) PH?
Which of the following structures illustrates an amino acid in a solution with a high (basic) PH?
Which of the following structures illustrates an amino acid in a solution with a high (basic) PH? 
Which of the following structures illustrates an amino acid as a zwitterion?
Which of the following structures illustrates an amino acid as a zwitterion? 
Amino acid structures and names
Amino acid structures and names
1) If the pI for a particular amino acid is 7.5, at which pH will the...
1) If the pI for a particular amino acid is 7.5, at which pH will the net charge on the molecule be zero? 2) Calculate the pH of 0.00756 M HNO3. 3) The isoelectric point of an amino acid is defined as: a. the pH at which it exists in the basic form b. the pH equals the pKa c. the pH at which it exists in the acidic form d. the pH at which the amino acid exits in...
If aluminum hydroxide is added to an acidic solution with a pH of 1.93, what is...
If aluminum hydroxide is added to an acidic solution with a pH of 1.93, what is the new pH after equilibrium is established? This problem is a bit tricky. So, extra help is given. The following ICE Table is useful: ... Al(OH)3(s) ↔ Al3+(aq) + 3OH-(aq) Ksp = 2.0 x10-32 M4 I: ...Excess ... ...0 ......... ...from pH C:.....-s....... ......s ...... ........3s E:...Excess ... ...s.......... .... ? (can't add) Hint, hydroxide produced neutralizes acid. [H+] =[H+]o -3s for 3s <...
List the sequence of structures that a single amino acid (initially in a protein molecule that...
List the sequence of structures that a single amino acid (initially in a protein molecule that you eat) goes through from the moment it passes your lips to when it ends up in a hepatocyte. Then explain what (if any) chemicals relevant to digestive physiology it is exposed to at each step and what happens to the protein and eventually protein fragments each step of the way.
1. Which amino acid traveled the furthest up the TLC plate and which amino acid traveled...
1. Which amino acid traveled the furthest up the TLC plate and which amino acid traveled the least? 2. Why must use a pencil instead of pen to write on TLC plate? 3. What is the function of ninhydrin spray? 4. What are the amino acid present in the unknown solution?
9.) Which of the following titrations results in an acidic solution at the equivalent point? a.)...
9.) Which of the following titrations results in an acidic solution at the equivalent point? a.) acetic acid titrated w/ NaOH b.) hydrochloric acid titrated w/ KOH c.) C5H5N titrated w/ HBr d.) NaOH titrated w/ nitric acid 10.) Which combination of solutions is the BEST choice for making a buffer solution? a.) equal volumes of 1 M ammonia and 0.001 M ammonium chloride. b.) equal volumes of 0.5 M HCl and 0.5 M NaOH. c.) equal volumes of 0.5...
Consider a 0.487 L solution of the amino aspartic acid (0.685 M), which ahs a carboxylic...
Consider a 0.487 L solution of the amino aspartic acid (0.685 M), which ahs a carboxylic acid group (pKa = 2.10), an amine group (pKa = 9.82), and a carboxylic acid side chain (pKa = 3.86). How many liters of 2.59 M NaOH would you need to add to reach the isoelectric point of the amino acid?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT