Practicals🔬

Question 1

When drawing a distillation diagram what should you bear in mind

Answer 1

Bulb of the thermometer should be at the T point connecting to the condenser

Question 2

Where is water going in and where is it going out in a condenser

Answer 2

Water goes in at a lower point (against gravity)

Question 3

Why does water flow against gravity in a condenser

Answer 3

Allows more efficient cooling and prevents back flow of water

Question 4

When drawing reflux diagram what should the condenser be like and what’s the reason for this

Answer 4

Never seal the end of the condenser (which is vertical)

Because the build up of gas pressure could cause the apparatus to explode

Question 5

Why is heating under reflux good to use

Answer 5

It prevents organic vapours from escaping by condensing them back to liquid

Question 6

What’s the use of anti bumping granules

Answer 6

Prevent vigorous, uneven boiling by making small bubbles