Electrolysis Hmwk
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29th January 2009
Electrolysis 1. Electrical energy is carried by electrical conductors. Metals are good conductors of electricity. Electricity also flow through solutions called electrolytes. Unlike metals, there are chemically changed when they conduct electricity. This process is called electrolysis. 2. a)
b) i. Anode = Oxygen ii. Cathode = Hydrogen 3. 1. 2. 3. 4. 5. 6. 7. 8.
Bromine – Br Calcium – Ca 2Hydrogen – H + Copper – Cu 2+ Chlorine – Cl – Zinc – Zn 2+ Oxygen – O 2Lead – Pb 2+
4. CATHODE Copper Chloride Copper Zinc Bromide Zinc Hydrochloric Acid Hydrogen
ANODE Chlorine Bromine Chlorine
29th January 2009 5. DURING ELECTROLYSIS… …To Cathode …To Anode Aluminium Iodine Iron Fluoride Zinc Oxide Silver Chloride 6.
a) Cu2+ + 2e- → Cu b) Through the circuit c) 64 / 2 = 32
Electrolysis 1. Electrical energy is carried by electrical conductors. Metals are good conductors of electricity. Electricity also flow through solutions called electrolytes. Unlike metals, there are chemically changed when they conduct electricity. This process is called electrolysis. 2. a)
b) i. Anode = Oxygen ii. Cathode = Hydrogen 3. 1. 2. 3. 4. 5. 6. 7. 8.
Bromine – Br Calcium – Ca 2Hydrogen – H + Copper – Cu 2+ Chlorine – Cl – Zinc – Zn 2+ Oxygen – O 2Lead – Pb 2+
4. CATHODE Copper Chloride Copper Zinc Bromide Zinc Hydrochloric Acid Hydrogen
ANODE Chlorine Bromine Chlorine
29th January 2009 5. DURING ELECTROLYSIS… …To Cathode …To Anode Aluminium Iodine Iron Fluoride Zinc Oxide Silver Chloride 6.
a) Cu2+ + 2e- → Cu b) Through the circuit c) 64 / 2 = 32
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