diaphragm and membrane cell Flashcards
1
Q
What is a diaphragm cell made from?
A
porous mixture of asbestos and polymers or graphite
2
Q
Why is level of brine higher than level of NaOH?
A
to ensure that brine does not flow back and mix with Cl2 produced
3
Q
What is stopped from passing through the diaphragm?
A
Chlorine gas
4
Q
What side is Hydrogen gas produced?
A
right
5
Q
pro of diaphragm cell
A
cheaper to construct
6
Q
cons of diaphragm cell`
A
- needs replacing
- purity of sodium hydroxide is low
- cell uses more energy per tonne of chloride produced
7
Q
what does a membrane cell allow?
A
only allows positive ions to pass through
8
Q
pros of membrane cell
A
- purity of sodium hydroxide is high
- cell uses less energy per tonne of chlorine produced
9
Q
cons of membrane cell
A
more expensive to construct
