In fractional distillation, what do you use to separate liquids with different boiling points?

In fractional distillation, what do you use to separate liquids with different boiling points?

• A. A simple flask
• B. A fractionating column
• C. A cooling system
• D. A vacuum chamber

Answer: (B)

In fractional distillation, a fractionating column is used to effectively separate liquids with different boiling points. The process relies on the principle that when a mixture of liquids is heated, the component with the lowest boiling point vaporizes first. As the vapor rises through the fractionating column, it undergoes repeated condensation and re-vaporization, enhancing the separation of the components. The column provides a larger surface area for these processes, allowing for better separation because each time the vapor condenses and re-vaporizes, it becomes richer in the more volatile component. This means that as the vapor moves up the column, it progressively becomes more concentrated in the component with the lower boiling point, ultimately leading to a more efficient separation of the components in the mixture. While a simple flask can hold the mixture for distillation, it lacks the specialized design needed for fractional distillation. A cooling system may be used to condense vapor back into liquid, but it does not facilitate the separation of components based on boiling points. A vacuum chamber is employed to lower boiling points by reducing pressure but is not specifically necessary for the fractional distillation of liquids at atmospheric pressure. Thus, the fractionating column is essential for achieving the desired separation based on differing boiling points during the

In fractional distillation, a fractionating column is used to effectively separate liquids with different boiling points. The process relies on the principle that when a mixture of liquids is heated, the component with the lowest boiling point vaporizes first. As the vapor rises through the fractionating column, it undergoes repeated condensation and re-vaporization, enhancing the separation of the components.

The column provides a larger surface area for these processes, allowing for better separation because each time the vapor condenses and re-vaporizes, it becomes richer in the more volatile component. This means that as the vapor moves up the column, it progressively becomes more concentrated in the component with the lower boiling point, ultimately leading to a more efficient separation of the components in the mixture.

While a simple flask can hold the mixture for distillation, it lacks the specialized design needed for fractional distillation. A cooling system may be used to condense vapor back into liquid, but it does not facilitate the separation of components based on boiling points. A vacuum chamber is employed to lower boiling points by reducing pressure but is not specifically necessary for the fractional distillation of liquids at atmospheric pressure. Thus, the fractionating column is essential for achieving the desired separation based on differing boiling points during the