**Amino Acids and Their Reactions**1. **The structure of the amino acid alanine is shown below:** ![Alanine structure](https://www.example.com/alanine_structure.jpg) *Tasks:* - **i. Identify the most acidic and most basic sites in the molecule.** - **ii. Draw the structure of the product formed by treating alanine with one equivalent of sodium hydroxide.** - **iii. Draw the structure of the product formed by treating alanine with one equivalent of hydrochloric acid.** *Explanation of the structure:* The molecular structure of alanine includes an amino group (NH₂), a carboxyl group (COOH), and a methyl group (CH₃) attached to a central carbon atom.2. **The structure of ascorbic acid is shown below. Redraw the structure on your sheet of paper and circle the most acidic hydrogen. Briefly explain your selection.** ![Ascorbic acid structure](https://www.example.com/ascorbic_acid_structure.jpg) *Explanation of the structure:* Ascorbic acid has multiple hydroxyl (OH) groups and a lactone (cyclic ester) ring. Identifying the most acidic hydrogen is key, which is typically located on the hydroxyl group adjacent to the carbonyl (C=O) group due to the resonance stabilization of the negative charge formed after dissociation.

In Alanine molecule i) The most acidic and basic sites of the molecules has to be identified. ii)…

1. The structure of the amino acid alanine is shown below: i. Identify the most acidic and most basic sites in the molecule ii. Draw the structure of the product formed by treating alanine with one equivalent of sodium hydroxide iii. Draw the structure of the product formed by treating alanine with one equivalent of hydrochloric acid H3C, `OH alanine NH2 2. The structure of ascorbic acid is shown below. Redraw the structure on your sheet of paper and circle the most acidic hydrogen. Briefly explain your selection. ОН HO НО ОН ascorbic acid

1. The structure of the amino acid alanine is shown below: i. Identify the most acidic and most basic sites in the molecule ii. Draw the structure of the product formed by treating alanine with one equivalent of sodium hydroxide iii. Draw the structure of the product formed by treating alanine with one equivalent of hydrochloric acid H3C, `OH alanine NH2 2. The structure of ascorbic acid is shown below. Redraw the structure on your sheet of paper and circle the most acidic hydrogen. Briefly explain your selection. ОН HO НО ОН ascorbic acid

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Amines

Amines are organic compounds with a nitrogen atom having a lone pair of electrons on it. They are derived from ammonia (NH3) wherein hydrogen atoms are substituted by an aryl or alkyl group.

Question

**Amino Acids and Their Reactions**

1. **The structure of the amino acid alanine is shown below:**

![Alanine structure](https://www.example.com/alanine_structure.jpg)

*Tasks:*
- **i. Identify the most acidic and most basic sites in the molecule.**
- **ii. Draw the structure of the product formed by treating alanine with one equivalent of sodium hydroxide.**
- **iii. Draw the structure of the product formed by treating alanine with one equivalent of hydrochloric acid.**

*Explanation of the structure:*

The molecular structure of alanine includes an amino group (NH₂), a carboxyl group (COOH), and a methyl group (CH₃) attached to a central carbon atom.

2. **The structure of ascorbic acid is shown below. Redraw the structure on your sheet of paper and circle the most acidic hydrogen. Briefly explain your selection.**

![Ascorbic acid structure](https://www.example.com/ascorbic_acid_structure.jpg)

*Explanation of the structure:*

Ascorbic acid has multiple hydroxyl (OH) groups and a lactone (cyclic ester) ring. Identifying the most acidic hydrogen is key, which is typically located on the hydroxyl group adjacent to the carbonyl (C=O) group due to the resonance stabilization of the negative charge formed after dissociation.

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Classify these amino acids as acidic, basic, neutral polar, or neutral nonpolar using the dropdown on the right. NH3 CH₂ I CH₂ CH₂ I CH₂ H₂N-C-COO H Lysine Amino Acid A CH₂ CH₂ H₂N-C-COO H Glutamic Acid Amino Acid D Amino Acid B (Alanine) CH3 H₂N-C-COO Amino Acid A (Lysine) H Alanine Amino Acid B CH3 HCOH H₂N-C-COO H Threonine Amino Acid E Choose [Choose OH CH₂ H₂N-C-COO H Serine Amino Acid C CH3 CH3 CH H₂N-C-COO H Valine Amino Acid F