Over time, the effectiveness of fractional distillation is diminished. How can this best be explained?
A. over time the distilling column heats up, and as the temperature increases, the amount of condensation and re-evaporation decreases.
B. over time the distilling column heats up, and as temperature increases, the amount of condensation and re-evaporation increases.
C. over time, the solution becomes poor in the more volatile component, so azeotropes increase.
D. over time, the solution becomes poor in the more volatile component, so azeotropes decrease.
Answer: A
Why is D wrong?
A. over time the distilling column heats up, and as the temperature increases, the amount of condensation and re-evaporation decreases.
B. over time the distilling column heats up, and as temperature increases, the amount of condensation and re-evaporation increases.
C. over time, the solution becomes poor in the more volatile component, so azeotropes increase.
D. over time, the solution becomes poor in the more volatile component, so azeotropes decrease.
Answer: A
Why is D wrong?