19. Synthesis of a liquid organic product
- 00:25 Why is it necessary to work in a fume cupboard?
- 00:34 Why is it better to use a stopper or plug?
- 00:37 Why cool the acid?
- 00:41 What is the role of the calcium chloride?
- 00:47 What type of reaction is occurring?
- 01:27 What is contained in the aqueous layer?
- 01:37 What is the role of the hydrogencarbonate?
- 01:43 What causes the froth?
- 01:54 What do you know about the comparative density of the upper layer?
- 02:10 What is the role of the magnesium sulfate?
- 02:15 Why does the milky colour disappear after adding the magnesium sulfate?
- 02:20 What could happen if too much magnesium sulfate is added?
- 02:55 What is the stoichiometry of the reaction?
digital balance (2 decimal-place)
100 cm3 round-bottomed flask
100 cm3 conical flask
100 cm3 conical flask with stopper
50 cm3 measuring cylinder
10 cm3 measuring cylinder
50 cm3 separating funnel
labels / fine-tipped permanent marker
heating-mantle / Bunsen burner with water-bath
filter-funnel with cotton wool
(CH3)3COH – flammable, irritant.
Vapour could ignite when close to flame. Contact with eyes. Could be inhaled.
Extinguish flames using fireblanket. Cool burnt skin under tap. Eye: flood with tap water (10min). See doctor. Inhalation of vapour: seek fresh air. Keep warm. See doctor if difficulty breathing.
Concentrated HCl solution – corrosive.
Contact with skin and eyes. Vapour inhaled.
Eye: flood with tap water (10min). See doctor. Skin:drench with plenty water. Inhalation: seek fresh air. See doctor if difficulty breathing.
CaCl2 – irritant
Contact with skin and eyes.
Eye: flood eye with tap water (10min). See doctor if pain persists. Skin: rinse as necessary