Concept explainers
(a)
Interpretation:
The peptide
Concept introduction:
Amino acids are classified as acidic, basic and neutral according to the functional group they possesses. Acidic amino acids are those which have one more than one carboxylic acid group in its side chain and basic amino acids are those which have one or more amino group present in their side chain. Isoelectric point of the amino acids is the pH of the dilute aqueous solution of the amino acid at which the total charge on all molecules of amino acid is zero.
Answer to Problem 27.10P
The peptide
There will be no charge on the peptide,
Explanation of Solution
Peptides are classified as acidic, basic, or neutral according to the amino acids they contain. If they contain unbalanced basic amino acid then they are considered as basic peptide and if they contain unbalanced acidic amino acid then they are considered as basic peptides. If the basic and acidic amino acids are balanced or not at all present in the peptide then it is considered as neutral peptide.
The given peptide
Figure 1
This tripeptide contains one amino group and one carboxylic group. So, this amino acid is neutral in nature. The
Figure 2
Therefore, the net charge on the peptide,
The peptide
(b)
Interpretation:
The peptide,
Concept introduction:
Amino acids are classified as acidic, basic and neutral according to the functional group they possesses. Acidic amino acids are those which have one more than one carboxylic acid group in its side chain and basic amino acids are those which have one or more amino group present in their side chain. Isoelectric point of the amino acids is the pH of the dilute aqueous solution of the amino acid at which the total charge on all molecules of amino acid is zero.
Answer to Problem 27.10P
The peptide,
The net charge on the peptide,
Explanation of Solution
Peptides are classified as acidic, basic, or neutral according to the amino acids they contain. If they contain unbalanced basic amino acid then they are considered as basic peptide and if they contain unbalanced acidic amino acid then they are considered as basic peptides. If the basic and acidic amino acids are balanced or not at all present in the peptide then it is considered as neutral peptide.
The given peptide,
Figure 3
This given peptide contains three amino group in its chain and one carboxylic group. So, this amino acid is basic in nature. All the amine group of the given peptide having value of
Figure 4
Therefore, the net charge of
The peptide,
(c)
Interpretation:
The peptide,
Concept introduction:
Amino acids are classified as acidic, basic and neutral according to the functional group they possesses. Acidic amino acids are those which have one more than one carboxylic acid group in its side chain and basic amino acids are those which have one or more amino group present in their side chain. Isoelectric point of the amino acids is the pH of the dilute aqueous solution of the amino acid at which the total charge on all molecules of amino acid is zero.
Answer to Problem 27.10P
The peptide
There will be no charge on the peptide,
Explanation of Solution
Peptides are classified as acidic, basic, or neutral according to the amino acids they contain. If they contain unbalanced basic amino acid then they are considered as basic peptide and if they contain unbalanced acidic amino acid then they are considered as basic peptides. If the basic and acidic amino acids are balanced or not at all present in the peptide then it is considered as neutral peptide.
The given peptide
Figure 5
This given peptide contains two amino groups in the side chain and two carboxylic groups. So, this amino acid is neutral in nature. All the amine groups of this peptide having
Figure 6
Therefore, the net charge on the peptide,
The peptide
(d)
Interpretation:
The peptide
Concept introduction:
Amino acids are classified as acidic, basic and neutral according to the functional group they possesses. Acidic amino acids are those which have one more than one carboxylic acid group in its side chain and basic amino acids are those which have one or more amino group present in their side chain. Isoelectric point of the amino acids is the pH of the dilute aqueous solution of the amino acid at which the total charge on all molecules of amino acid is zero.
Answer to Problem 27.10P
The peptide
The charge present on the peptide,
Explanation of Solution
Peptides are classified as acidic, basic, or neutral according to the amino acids they contain. If they contain unbalanced basic amino acid then they are considered as basic peptide and if they contain unbalanced acidic amino acid then they are considered as basic peptides. If the basic and acidic amino acids are balanced or not at all present in the peptide then it is considered as neutral peptide.
The given peptide
Figure 7
This given peptide contains two amino groups in the side chain and four carboxylic groups. So, this amino acid is acidic in nature. All the amine groups of this peptide having
Figure 8
Therefore, the net charge on the peptide,
The peptide
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Chapter 27 Solutions
Loose-leaf Version For Organic Chemistry
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