Electrolysis Pt2

Question 1

What is the definition of ELECTROLYSIS

Answer 1

The decomposition of a compound using electricity

Question 2

A non-metal Electrode

Answer 2

Carbon graphite

Question 3

There are two types of electrolysis

Electrolysis of ________ and ___________ (_______&__________)

Answer 3

Molten

Solution (Dilute & Concentrated)

Question 4

Advantages of Non-metal electrodes
 #3

Answer 4

Cheap
Inert (doesnt react)
Conducts electricity

Question 5

Electrolyte |||||| Cathode(-) ||||||| Anode (+)
Molten sodium chloride

Answer 5

Cathode: Sodium (Na)
Anode: Chlorine (Cl2)

Question 6

Electrolyte |||||| Cathode(-) ||||||| Anode (+)
Hydrochloric acid solution

Answer 6

Cathode: H2

Anode : O2

Question 7

If the question does not mention dilute or concentrated, its ______

Answer 7

dilute

Question 8

Electrolyte |||||| Cathode(-) ||||||| Anode (+)
Conc. aq. NaCl

Answer 8

Cathode: H2
Anode: Cl2

Question 9

Electrolyte |||||| Cathode(-) ||||||| Anode (+)
Conc. aq. CuSO4

Answer 9

cathode: Cu
anode: O2

Question 10

Dilute:
Cathode (-) : __ or __
Anode (+) : __

Answer 10

Cathode (-) : Cu or H2

Anode (+) : O2

Question 11

Concentrated
Cathode (-) : __ or __
Anode (+) : __ or __

Answer 11

Cathode (-) : Cu or H2

Anode (+) : O2 or X2

Question 12

the ionic equation 
at cathode (-)
#2

Answer 12

Cu2+ (aq) + 2e- = Cu (s)

2h+ (aq) + 2e- = H2 (s)

Question 13

the ionic equation at the anode (+)
#3

Answer 13

4OH- (aq) = 2H2O (l) + O2 (g) + 4e-
2Cl- (aq) = Cl2 (g) + 2e-
2Cl- (aq) - 2e- = Cl2(g)