For part (a), acid-catalyzed dehydration requires only the presence of acid; sulfuric acid is typically used.
The Williamson ether synthesis is a two-step synthesis, the reaction conditions for which are...
1) strong base (NaH or NaOH)
2) an alkyl halide RX where R is the desired alkyl group to be added to form the ether
The reagents used to perform alkoxymercuration-demercuration are as follows...
1) Hg(OAc)2, ROH where R is the desired alkyl group to be added to form the ether
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