Final answer:
The expected major product of the Na/NH₃ reaction is NaNH₂ (choice A)
Step-by-step explanation:
The expected major product of the reaction shown below, Na/NH₃, is NaNH₂ (choice A).
In this reaction, sodium (Na) reacts with ammonia (NH₃) to form sodium amide (NaNH₂). This reaction can be written as:
2Na + 2NH₃ → 2NaNH₂ + H₂
NaNH₂ is the major product because it is formed by the complete reaction of Na with NH₃. The other options (B, C, and D) are not produced in significant amounts in this reaction.