Questions: Which statement is true concerning the 2 -step reaction below? (C) a The overall reaction is Substitution. b The overall reaction is Addition. c The overall reaction is Elimination. d The overall reaction is a rearrangement.

Solution Steps

• The first step involves the reaction of a cyclohexanol derivative (with an -OH group) with NaH.
• The product of this step is a cyclohexoxide ion (with an -O⁻ group) and the by-products are Na⁺ and H₂ gas.

• The second step involves the reaction of the cyclohexoxide ion (with an -O⁻ group) with CH₃Br.
• The product of this step is a cyclohexyl methyl ether (with an -OCH₃ group) and the by-product is NaBr.

• The overall reaction involves the replacement of the -OH group with an -OCH₃ group.
• This indicates that the -OH group is substituted by the -OCH₃ group.

Final Answer