RP5- Distillation Flashcards

1
Q

Where does the water go in to a condenser for distillation?

A
  • in closer to the products
  • out closer to the reactants
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2
Q

Why are anti-bumping granules needed?

A
  • smooth boiling
  • prevents splashing into condenser
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3
Q

Why should the system be closed?

A
  • prevent gases from escaping
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4
Q

How should the system be sealed?

A
  • bung and thermometer
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5
Q

Why should a thermometer used?

A
  • stay a suitable temperature range
  • only one product collected
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6
Q

What is distillation?

A

where a liquid is heated into a vapour, which then condenses and allows liquid to drip into flask

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7
Q

Why is an excess of NaOH used when hydrolysing an ester?

A

to ensure all the ester reacts

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8
Q

Why is an electric heater used rather than a bunsen burner?

A

alcohol/organic compounds are flammable

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9
Q

Why is reflux used?

A

does not allow any reactant vapour to escape

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10
Q

Why does the top of the separating funnel need to be opened periodically?

A

to allow CO2 to leave/avoid pressure build up

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11
Q

What makes a drying agent suitable?

A
  • absorbs water
  • does not react with product
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12
Q

How would you maximise yield from distillation?

A
  • keep temperature below boiling point
  • cool collecting vessel
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