0. Which two structures ionize with loss of bromide to form the same carbocation? Br Br Br 20 Br I II III IV (A) I and II (B) II and III IV

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Chapter1: Chemical Foundations
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**Question: PQ-20. Which two structures ionize with the loss of bromide to form the same carbocation?**

**Options:**

- (A) I and II
- (B) II and III
- (C) I and IV
- (D) III and IV

**Structure Diagrams:**

1. **Structure I:**
   - A linear structure with a bromide (Br) atom attached to a secondary carbon in a chain.

2. **Structure II:**
   - A branched structure with a bromide (Br) atom attached to a more substituted carbon. 

3. **Structure III:**
   - Similar to structure I, but with a different positioning of the bromide (Br) in the chain.

4. **Structure IV:**
   - Similar to structure II in branching, with bromide (Br) attached to a carbon atom participating in a double bond with another carbon. 

**Correct Answer: (C) I and IV**

These structures are likely to ionize, losing bromide to form the same carbocation due to their similar carbon frameworks that allow rearrangement or delocalization of charge.
Transcribed Image Text:**Question: PQ-20. Which two structures ionize with the loss of bromide to form the same carbocation?** **Options:** - (A) I and II - (B) II and III - (C) I and IV - (D) III and IV **Structure Diagrams:** 1. **Structure I:** - A linear structure with a bromide (Br) atom attached to a secondary carbon in a chain. 2. **Structure II:** - A branched structure with a bromide (Br) atom attached to a more substituted carbon. 3. **Structure III:** - Similar to structure I, but with a different positioning of the bromide (Br) in the chain. 4. **Structure IV:** - Similar to structure II in branching, with bromide (Br) attached to a carbon atom participating in a double bond with another carbon. **Correct Answer: (C) I and IV** These structures are likely to ionize, losing bromide to form the same carbocation due to their similar carbon frameworks that allow rearrangement or delocalization of charge.
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