boiling point

Incorrect. Filtration primarily removes physical particles, not based on boiling points.

Correct! Distillation relies on the difference in boiling points to separate water from impurities.

Incorrect. Coagulation involves clumping small particles together for easier removal.

Incorrect. Aeration involves introducing air to water, usually to remove dissolved gases.

Incorrect. Lowering pressure decreases the boiling point.

Correct! Lowering pressure makes it easier for molecules to escape into vapor phase, hence a lower boiling point.

Incorrect. Pressure directly influences the boiling point.

Incorrect. There is a predictable relationship between pressure and boiling point.

Incorrect. This method directly utilizes the boiling point to remove excess water.

Incorrect. This method relies on the boiling point of VOCs to remove them from water.

Correct! Biological degradation is a separate process that doesn't rely directly on boiling points.

Incorrect. This process utilizes the heat generated by steam, but the actual boiling point of the wastewater itself isn't the key factor here.

Incorrect. Fractional distillation separates substances based on their boiling points, not color.

Incorrect. While density can play a role in separation, fractional distillation focuses primarily on boiling points.

Correct! Fractional distillation utilizes the differences in boiling points to separate different components.

Incorrect. Solubility is important for some separation methods, but not directly for fractional distillation.

Incorrect. Filtration effectiveness is more related to pore size and particle size.

Correct! Understanding boiling points allows for optimizing various purification and separation methods.

Incorrect. While boiling point can influence chemical reactions, it doesn't directly determine the chemical composition.

Incorrect. Identifying microorganisms typically requires other methods like microscopy or culturing.

Here's a basic distillation setup you could create using common household items:

1. Setup:

• Use a pot as your distillation flask. Fill it with the water and ethanol mixture.
• Place a beaker or bowl over the pot. This will act as your condenser. It should be placed slightly higher than the pot so that the vapor can easily flow into it.
• Place a piece of cloth or paper towel over the beaker to act as a lid. This will help to prevent the vapor from escaping.
• Fill the beaker with cold water to cool the vapor and condense it back into liquid.

2. Process:

• Gently heat the pot with the mixture. As the temperature rises, ethanol will vaporize first due to its lower boiling point.
• The ethanol vapor will rise and pass through the cloth into the beaker, where it will be cooled by the cold water.
• The cooled vapor will condense back into liquid ethanol and collect in the beaker.
• As the heating continues, more ethanol will vaporize and condense, collecting in the beaker until all the ethanol is separated.
• The water left in the pot will have a higher boiling point and will remain in liquid form.

This is a simplified explanation. Real distillation systems use more sophisticated equipment for accurate separation and safety.