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. £x H a C H H :0: :o: بسة HPK 0 a b 0 d 0 С X acid CHA NH₂ HC=CH O CH, CCH H₂O CH,CNH, pK₁ 50 35 25 19 16 15 ? olo Ar

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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.

There are two chemical structures depicted with labeled hydrogen atoms (H):

1. The first structure is a cyclohexane ring with two oxygen atoms. The hydrogens are labeled:
   - **H a** attached to a carbon with a hydroxyl group.
   - **H b** attached to a carbon adjacent to an ester group.

2. The second structure is a cyclopentanone ring with an aldehyde group. The hydrogen atoms are labeled:
   - **H c** attached to the carbon of the aldehyde group.
   - **H d** attached to a carbon on the opposite side of the ring from **H c**.

To the right, there is a table listing acids and their corresponding pKₐ values:

| Acid      | pKₐ |
|-----------|-----|
| CH₄       | 50  |
| NH₃       | 35  |
| HC≡CH     | 25  |
| CH₃C(=O)CH₃ | 19  |
| H₂O       | 16  |
| CH₃C≡N    | 15  |

Below the labeled hydrogens (H a, H b, H c, H d), there's an answer box where the estimated pKₐ values for each labeled hydrogen are to be filled in based on the provided pKₐ table.
Transcribed Image Text: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. There are two chemical structures depicted with labeled hydrogen atoms (H): 1. The first structure is a cyclohexane ring with two oxygen atoms. The hydrogens are labeled: - **H a** attached to a carbon with a hydroxyl group. - **H b** attached to a carbon adjacent to an ester group. 2. The second structure is a cyclopentanone ring with an aldehyde group. The hydrogen atoms are labeled: - **H c** attached to the carbon of the aldehyde group. - **H d** attached to a carbon on the opposite side of the ring from **H c**. To the right, there is a table listing acids and their corresponding pKₐ values: | Acid | pKₐ | |-----------|-----| | CH₄ | 50 | | NH₃ | 35 | | HC≡CH | 25 | | CH₃C(=O)CH₃ | 19 | | H₂O | 16 | | CH₃C≡N | 15 | Below the labeled hydrogens (H a, H b, H c, H d), there's an answer box where the estimated pKₐ values for each labeled hydrogen are to be filled in based on the provided pKₐ table.
### Chemical Structures and pKa Values

#### Chemical Structures
The image displays a series of chemical structures with labeled hydrogen atoms:
- The structure labeled "a" features an oxygen atom with lone pairs.
- Another structure, labeled "c," has an "H" attached to an oxygen atom connected to a ring structure.
- The structure labeled "d" shows an "H" attached to a nitrogen atom, which is part of a chain.

#### pKa Table
Alongside the structures, a table lists various chemical species and their corresponding pKa values:

| Compound         | pKa |
|------------------|-----|
| HC≡CH            | 25  |
| CH₃C(=O)CH₃      | 19  |
| H₂O              | 16  |
| CH₃C(=O)NH₂      | 15  |
| NH₄⁺             | 9   |
| CH₃C(=O)OH       | 5   |
| H₃O⁺             | -2  |

This table provides the acidity levels (pKa values) of various compounds, offering insight into their chemical behavior in different environments.
Transcribed Image Text:### Chemical Structures and pKa Values #### Chemical Structures The image displays a series of chemical structures with labeled hydrogen atoms: - The structure labeled "a" features an oxygen atom with lone pairs. - Another structure, labeled "c," has an "H" attached to an oxygen atom connected to a ring structure. - The structure labeled "d" shows an "H" attached to a nitrogen atom, which is part of a chain. #### pKa Table Alongside the structures, a table lists various chemical species and their corresponding pKa values: | Compound | pKa | |------------------|-----| | HC≡CH | 25 | | CH₃C(=O)CH₃ | 19 | | H₂O | 16 | | CH₃C(=O)NH₂ | 15 | | NH₄⁺ | 9 | | CH₃C(=O)OH | 5 | | H₃O⁺ | -2 | This table provides the acidity levels (pKa values) of various compounds, offering insight into their chemical behavior in different environments.
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