Final answer:
The correct sequence of reagents for the given synthesis cannot be determined without the context of the starting material and desired product. The listed reagents are generally employed for reactions such as deprotonation, alkylation, reduction, and hydration, but their use is dependent on the specific chemical transformation required.
Step-by-step explanation:
The student has asked which sequence of reagents will accomplish a specific synthesis. The correct sequence of reagents from the given options would depend on the nature of the starting material and the desired product, which are not mentioned in the question. Commonly, reagents like NaNH₂ are used for the deprotonation of alkynes, CH₃I for alkylations, and H₂O for hydrolysis or hydration reactions. Reagents like LiAlH₄ and NaBH₄ are used for reductions, with key differences in their reactivity and selectivity. Sulfuric acid (H₂SO₄) is often involved in hydration reactions and can also act as a catalyze.
Without clear context of the synthesis, we cannot definitively answer the question. However, if we were to assume a reaction on an alkene or alkyne that requires hydration or alkylation, we could make educated guesses on possible reagents used in such transformations.
For example,
a. H₂ (Ni catalyst) typically results in hydrogenation reactions, reducing alkenes to alkanes.
b. Br₂ will add to alkenes in a halogenation reaction.
c. H₂O (H₂SO₄ catalyst) facilitates acid-catalyzed hydration of alkenes.