Chemistry Reference
In-Depth Information
hydrochloric
acid
soap
bromine
production
paper
AI
water
treatment
aluminium
extraction
plastic
sodium
hydroxide
chlorine
solvents
inorganic/
organic
sodium salts
ti
CONCENTRATED SODIUM
CHLORIDE SOLUTION
disinfectants
H
effluent
treatment
extraction
of titanium
textiles (e.g.
rayon, wool
& cotton)
chemicals
(e.g. dyes &
pesticides)
hydrogen
welding
food
industry
ammonia
rocket
fuel
hydrochlori
c
acid
hydrogen
peroxide
Figure 5.12
The chlor-alkali industry.
chlorine out
brine in
Cl
2
(
g
)
brine
(electrolyte)
in
H
2
(
g
)
brine level
Cl
2
H
2
ions
present:
Na
hydrogen
out
asbestos
membrane
anode
connection
titanium
anodes
cell
liquor
H
from
water
from
sodium
chloride
cell liquor out
(it contains
H
2
O, Na
, OH
)
Cl
H
OH
H
Na
Cl
H
2
O
(
)
titanium
anode
(
)
steel
cathode
membrane
cathode
connection
a
A section through the membrane cell.
cathode gauze
b
A diagrammatic representation of the reactions going on inside the cell.
Figure 5.13
