Question

Compound A (lower b.p.) and compound B (higher b.p.) are distilled in a fractional distillation. Which compound is mostly present in the distillate?

Answer 1

In fractional distillation, Compound A with the lower boiling point and higher volatility will predominantly be present in the distillate after separation.

Step-by-step explanation:

During a fractional distillation, compounds with different boiling points are separated based on their volatility. Compound A, which has a lower boiling point, is more volatile, meaning it will vaporize at a lower temperature than Compound B. Therefore, when fractional distillation is performed, Compound A will vaporize first and condense in the distillation apparatus, making it the compound mostly present in the distillate.