Question:
Coupling of diazonium salts of the following takes place in the order (Ascending)
Coupling of diazonium salts of the following takes place in the order (Ascending)
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More electron-donating groups = faster azo coupling.
Updated On: Apr 20, 2026
- IV - II - III - I
- IV - III - II - I
- II - IV - I - III
- I - II - III - IV
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Azo coupling is an electrophilic aromatic substitution reaction. Reactivity depends on electron density of the ring.
Step 2: Detailed Explanation:
Electron-donating groups increase reactivity, while electron-withdrawing groups decrease it.
Thus, the increasing order of reactivity is: IV<II<III<I.
Step 3: Final Answer:
IV - II - III - I
Azo coupling is an electrophilic aromatic substitution reaction. Reactivity depends on electron density of the ring.
Step 2: Detailed Explanation:
Electron-donating groups increase reactivity, while electron-withdrawing groups decrease it.
Thus, the increasing order of reactivity is: IV<II<III<I.
Step 3: Final Answer:
IV - II - III - I
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