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Q.

Ether like ROR can be cleaved by concentrated HI but not by HCl because

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a

I– is a stronger nelceophile than Cl–

b

None of the above

c

SN1 mechanism carried out in this reaction is rapidly in presence of HI

d

I– is a weaker nulceophile than Cl–

answer is B.

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Detailed Solution

  • The cleavage of ether (ROR) by a halogen hydracid is eventually a SN​2 type displacement where halide ion (X−) acts as a nucleophile. 
  • Since, I− is a very strong nucleophile compared to Cl−, reaction easily occurs when HI is used and not by HCl.
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