6.2.5 Organic Synthesis Flashcards by Anna W

Q

Draw a diagram of reflux apparatus

A

See notes

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Draw a diagram of distillation apparatus

A

See notes

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

How can a liquid organic product be purified?

A

spearing funnel - add water, shake, open tap and collect lower layer, removes soluble impurities
dry with drying agent - e.g. anhydrous calcium chloride or magnesium sulphate
filter or decant
redistillation - collect product at specific boiling point

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

How can a solid organic product be purified?

A

Recrystallisation:
- dissolve in MINIMUM of HOT solvent
- filter while HOT to remove insoluble impurities under gravity
- cool and crystallise (scratch with glass rod)
- filter under vacuum (soluble impurities remain in filtrate)
- wash with MINIMUM of COLD solvent
- dry in drying oven

How well did you know this?

1

Not at all

2

3

4

5

Perfectly