Final answer:
Not neutralizing the acid could lead to reverse reactions, decomposition of the product during distillation, and impure results. It also presents safety concerns.
Step-by-step explanation:
If you did not neutralize the acid from your chemical reaction last week, several outcomes are possible. Firstly, the acid might catalyze reverse reactions, which can reduce the yield of your desired product. Secondly, during distillation, if the acid remains in the mixture, it could decompose the product, especially if the product is sensitive to acidic conditions. Furthermore, any residual acid could interfere with the separation process itself, leading to a less pure product. Lastly, although the absence of neutralization might not necessarily ruin the experiment completely, it does pose safety and handling concerns, making it better practice to neutralize corrosive substances.