16: Eletrolysis of brine Flashcards
1
Q
What is the chlor-alkali industry?
A
a chemical industry that produces useful new substances from the electrolysis of brine
2
Q
Products formed at each electrode in electrolysis
A
Chlorine forms at anode (positive electrode)
Hydrogen forms at cathode (negative electrode)
3
Q
What Is oxidation?
A
loss of electrons
4
Q
What is reduction?
A
gain of electrons
5
Q
Ionic equation at anode
A
2Cl- - 2e- = Cl2
6
Q
Ionic equation at cathode
A
2H+ + 2e- = H2
7
Q
How do you test for chlorine?
A
When blue litmus paper is held in chlorine, it turns red and then white
