$9.$ Steam distillation leverages $\_\_\_\_\_\_$ to distill compounds at temperatures $\_\_\_\_$ their normal boiling points, making it ideal for $\_\_\_\_\_\_.$

$10.$ The PonchonSavarit method differs from McCabeThiele by incorporating $\_\_\_\_\_\_$ and $\_\_\_\_$ balances, offering a more detailed analysis for $\_\_\_\_\_\_.$

$11.$ Differential distillation operates without $\_\_\_\_\_\_,$ resulting in a $\_\_\_\_$ that changes composition over time, ideally suited for $\_\_\_\_\_\_$ separations.

$12.$ The concept of total reflux implies that $\_\_\_\_\_\_$ is returned to the column as reflux, allowing for the determination of $\_\_\_\_$ with $\_\_\_\_\_\_$ stages.