e e following compounds is most basic? se I II III IV O

Chemistry
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Chapter1: Chemical Foundations
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**Question 12:** Which of the following compounds is most basic?

**Answer Options:**
- A) I
- B) II
- C) III
- D) IV
- E) All of these

**Answer Key:**
- Correct answer: D) IV (This answer is circled)

**Diagrams Explanation:**

1. **Compound I**: A benzene ring with a hydroxyl group (phenol).
2. **Compound II**: A cyclohexanone (six-membered carbon ring with a double-bonded oxygen).
3. **Compound III**: A benzene ring bonded to an ethyl group ending in a triple bond (phenylacetylene).
4. **Compound IV**: An aniline (benzene ring bonded to an amino group, -NH₂).

Compound IV is highlighted as the basic compound due to the presence of the amino group, which is more basic than the other functional groups in the given structures.

**Source:** Fall 2016, Ormrod
Transcribed Image Text:**Question 12:** Which of the following compounds is most basic? **Answer Options:** - A) I - B) II - C) III - D) IV - E) All of these **Answer Key:** - Correct answer: D) IV (This answer is circled) **Diagrams Explanation:** 1. **Compound I**: A benzene ring with a hydroxyl group (phenol). 2. **Compound II**: A cyclohexanone (six-membered carbon ring with a double-bonded oxygen). 3. **Compound III**: A benzene ring bonded to an ethyl group ending in a triple bond (phenylacetylene). 4. **Compound IV**: An aniline (benzene ring bonded to an amino group, -NH₂). Compound IV is highlighted as the basic compound due to the presence of the amino group, which is more basic than the other functional groups in the given structures. **Source:** Fall 2016, Ormrod
Expert Solution
Step 1

The base which form a stable conjugate acid that is more basic .

-> conjugate acid is formed when base can accepts hydrogen ion.

-> unstable species get hydrogen ion easily.

-> Negative charge on sp2 carbon is unstable .

 

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