Rutgers Organic Chemistry Laboratory 2025 – 400 Free Practice Questions to Pass the Exam

A successful distillation process is indicated by a clear separation of fractions with sharp boiling points. This outcome demonstrates that the components within the mixture have been effectively separated based on their different volatilities. In an ideal distillation, each fraction corresponds to a specific boiling point, which reveals that the distillation apparatus is functioning properly and that the components are adequately separated.

This sharp distinction in boiling points is crucial because it allows for the collection of purified substances. When the fractions can be observed with minimal overlap and distinct boiling ranges, it confirms that each component can be isolated effectively from the mixture.

In contrast, other choices would not signify a successful distillation. Rapid boiling without separation suggests that the process may be more vigorous than required and could lead to an inefficient separation of components. Continuous evaporation of the solvent, while indicative of boiling, does not confirm whether the components are being isolated effectively. Finally, the formation of a solid residue may imply that non-volatile impurities are present, which can complicate the distillation process and signify that it did not yield a pure liquid distillate.