Exactly of a symmetrical dialkyl ether () is subjected to cleavage by being heated strongly with a vast excess of concentrated hydroiodic acid (). What are the final isolated products?

Question

Exactly $1 	ext{ mole}$ of a symmetrical dialkyl ether ($R-O-R$) is subjected to cleavage by being heated strongly with a vast excess of concentrated hydroiodic acid ($HI$). What are the final isolated products?

Prashant Kotian · Accepted Answer

Correct answer: B. With cold/dilute HI, 1 mole of ether yields 1 mole of alcohol and 1 mole of alkyl iodide. However, with an excess of strong, hot HI, the initially formed alcohol is further substituted by a second molecule of HI to form a second molecule of alkyl iodide. The net reaction yields 2 moles of and water.

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