**Instructions:**Using only the information in the pKₐ table below, write an estimated pKₐ value for each labeled H in the two structures below. For example, if the pKₐ value of the H labeled *a* has an estimated value of 50, write 50 in the first box of the answer table and so on.**Structures:**- **Structure 1:** - Proton labeled *a* attached to a nitrogen. - Proton labeled *b* attached to an oxygen within a furan ring. - **Structure 2:** - Proton labeled *c* attached to an oxygen connected to a carbon ring. - Proton labeled *d* attached to an oxygen at a hydroxyl group.**Answer Table:**| H | pKₐ ||---|-----|| a | || b | || c | || d | |**pKₐ Reference Table:**| Acid | pKₐ ||-------------|-----|| CH₄ | 50 || NH₃ | 35 || HC≡CH | 25 || CH₃C≡CH | 19 || H₂O | 16 || CH₃CNH₂ | 15 |**Task:**Estimate the pKₐ values based on the protons’ environments in each structure using the reference table provided. The image contains a chemical structure diagram on the left, and a table listing chemical species and their pKa values on the right.**Chemical Structure:**- The diagram depicts a complex organic molecule. It includes several functional groups and atoms labeled as "H^c," "H^d," and others. The structure has a benzene ring fused with a five-membered nitrogen-containing ring, likely indicating a heterocyclic compound.**Table of Chemical Species and pKa Values:**1. **O=C(CH₃)₂** - pKa: 192. **H₂O** - pKa: 163. **O=C(NH₂)(CH₃)** - pKa: 154. **NH₄⁺** - pKa: 95. **O=CH₃COH** - pKa: 56. **H₃O⁺** - pKa: −2The pKa values represent the strength of an acid, with lower pKa values indicating a stronger acid. The given values help in understanding the acidity of various chemical species.

pKa values of hydrogen (H) atom explain its tendency to be removed as H+. A smaller pKa value is an…

Using only the information in the pK table below, write an estimated pK value for each labeled H in the two structures below. For example, if the pK, value of the H labeled a has an estimated value of 50, write 50 in the first box of the answer table and so on. hor :0: H d :0: 0: H b pka 0 b 0 0 0 H a с d X acid CH, 4 NH3 HC=CH II CH CCH3 H₂O || CH,CNH, pK 50 35 25 19 16 15 ? A olo Ar

Using only the information in the pK table below, write an estimated pK value for each labeled H in the two structures below. For example, if the pK, value of the H labeled a has an estimated value of 50, write 50 in the first box of the answer table and so on. hor :0: H d :0: 0: H b pka 0 b 0 0 0 H a с d X acid CH, 4 NH3 HC=CH II CH CCH3 H₂O || CH,CNH, pK 50 35 25 19 16 15 ? A olo Ar

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

Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.

Question

**Instructions:**

Using only the information in the pKₐ table below, write an estimated pKₐ value for each labeled H in the two structures below. For example, if the pKₐ value of the H labeled *a* has an estimated value of 50, write 50 in the first box of the answer table and so on.

**Structures:**

- **Structure 1:**
- Proton labeled *a* attached to a nitrogen.
- Proton labeled *b* attached to an oxygen within a furan ring.

- **Structure 2:**
- Proton labeled *c* attached to an oxygen connected to a carbon ring.
- Proton labeled *d* attached to an oxygen at a hydroxyl group.

**Answer Table:**

| H | pKₐ |
|---|-----|
| a | |
| b | |
| c | |
| d | |

**pKₐ Reference Table:**

| Acid | pKₐ |
|-------------|-----|
| CH₄ | 50 |
| NH₃ | 35 |
| HC≡CH | 25 |
| CH₃C≡CH | 19 |
| H₂O | 16 |
| CH₃CNH₂ | 15 |

**Task:**

Estimate the pKₐ values based on the protons’ environments in each structure using the reference table provided.

The image contains a chemical structure diagram on the left, and a table listing chemical species and their pKa values on the right.

**Chemical Structure:**

- The diagram depicts a complex organic molecule. It includes several functional groups and atoms labeled as "H^c," "H^d," and others. The structure has a benzene ring fused with a five-membered nitrogen-containing ring, likely indicating a heterocyclic compound.

**Table of Chemical Species and pKa Values:**

1. **O=C(CH₃)₂** - pKa: 19
2. **H₂O** - pKa: 16
3. **O=C(NH₂)(CH₃)** - pKa: 15
4. **NH₄⁺** - pKa: 9
5. **O=CH₃COH** - pKa: 5
6. **H₃O⁺** - pKa: −2

The pKa values represent the strength of an acid, with lower pKa values indicating a stronger acid. The given values help in understanding the acidity of various chemical species.

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