Final answer:
To select the correct set of reagents for a specific chemical transformation, one needs to know the starting material and desired product. Reagents like EtMgBr, EtLi, SOCl2, NH3, and LiAlH4 have specific roles in organic synthesis, such as forming carbon-carbon bonds, converting alcohols to alkyl chlorides, and reducing carbonyl compounds. Option A is correct.
Step-by-step explanation:
The question is asking to identify the correct set of reagents that will achieve a specific chemical transformation. Without knowing the exact transformation intended (which the question doesn't specify), it is challenging to give a definitive answer. However, here are some guidelines based on the reagents listed in the options:
- EtMgBr and EtLi are both strong bases and nucleophiles, often used in Grignard and organolithium reactions, respectively, to form carbon-carbon bonds.
- SOCl2 is typically used to convert alcohols into alkyl chlorides.
- NH3 (ammonia) could be used for acid-base reactions or to form amides from acyl chlorides.
- LiAlH4 is a strong reducing agent commonly used to reduce carbonyls to alcohols.
- The use of an ether such as Et2O is common as a solvent for organometallic reactions.
- H3O+ indicates an acid work-up, typically to protonate an intermediate and to form the final product.
Given these reagents' roles, the correct set would be determined by the nature of the starting material and the desired product in the transformation the student is trying to accomplish.