10.07.2022 - 09:30

Select the reason why material such as glass beads or steel wool is sometimes packed into a fractional distilling column. a. The material reduces the vapor pressure of the component with the lower bo

Question:

Select the reason why material such as glass beads or steel wool is sometimes packed into a fractional distilling column.

a. The material reduces the vapor pressure of the component with the lower boiling point, allowing for azeotropes to be separated.

b. The material provides additional surface area for vaporizations and condensations, resulting in a more effective distillation.

c. The material increases the temperature inside the column, resulting in a more effective distillation.

d. The material is packed into the column to prevent the sample from bumping into the condenser.

Answers (1)
  • Edythe
    April 19, 2023 в 12:42
    The answer is b. The material provides additional surface area for vaporizations and condensations, resulting in a more effective distillation. Glass beads or steel wool are sometimes used as packing material in a fractionating column to increase the surface area available for vaporization and condensation. This allows for better separation of components with similar boiling points, resulting in a more effective distillation. Option a is incorrect because reducing the vapor pressure of the component with the lower boiling point would actually make azeotropic separation more difficult, not easier. Option c is incorrect because increasing the temperature inside the column would not necessarily result in a more effective distillation, as it could lead to thermal decomposition of the components. Option d is incorrect because preventing bumping into the condenser can be achieved using other methods, such as boiling chips, and is not the main reason for packing material in a fractional distilling column.
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