Exams › JEE Advanced › Chemistry
Which of the following statements about the reaction of an alkyl halide with aqueous silver oxide (Ag2O) is/are correct? (A) The reaction is faster because Ag+ assists in removing Br- through formation of insoluble AgBr, making the C-Br bond easier to break. (B) Aqueous Ag2O provides AgOH as the actual nucleophile: Ag2O + H2O -> 2 AgOH.
- A only
- B only
- Both A and B
- Neither A nor B
Correct answer: Both A and B
Solution
Statement A: Ag+ precipitates Br- as AgBr (insoluble), pulling the equilibrium forward and assisting in breaking the C-Br bond. This is a well-established reason why Ag2O is more effective than NaOH for this conversion. Statement A is correct. Statement B: Ag2O + H2O -> 2 AgOH. AgOH then acts as the nucleophile in an SN2 reaction. The equation is correct and this is the accepted mechanism. Statement B is correct. Both A and B are correct.
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