Simple and fractional distillation

What is the main PURPOSE of simple distillation?

• To separate solid from liquid

• To separate a liquid from a solution

• To combine two liquids

• To cool down a liquid

Which piece of EQUIPMENT is used to measure the TEMPERATURE during simple distillation?

• Beaker

• Bunsen burner

• Thermometer

• Fractionating column

In simple distillation, what is used to COOL the vapour?

• Hot air

• Ice

• Steam

• Cold water

What is LEFT in the flask after simple distillation of seawater?

• Pure water

• Salt

• Methanol

• Vapor

Which type of distillation is used to separate liquids with SIMILAR BOILING POINTS?

• Simple distillation

• Crystallisation

• Boiling

• Fractional Distillation

Why will simple distillation NOT work for a mixture of different liquids?

• All the liquids will evaporate at the same time

• No condensation occurs

• None of them boil at 100C

• They are not a mixture and so will not separate

What is the role of the fractionating column in fractional distillation?

• To cool the liquid

• To heat the liquid

• To provide a high surface area for vapor to condense

• To collect the liquid

What happens to the ethanol and propanol as they rise up the fractionating column?

• They evaporate and collect in the beaker

• They condense and fall back into the flask

• They remain in the condenser

• They cool down and stop moving

How many times might you need to repeat the distillation process for purifying ethanol?

• Once

• Twice

• Three times

• Depends on mixture

What is the final product left in the flask after distilling ethanol?

• Pure methanol

• Pure ethanol

• Pure propanol

• A mixture of all three liquids