CHAPTER 3 ELECTROLYSIS SEMESTER 1

                                       

ELECTROLYSIS  OF MOLTEN NaCl

ELECTROLYSIS  OF SOLUTIONS.

HALF EQUATIONS

  At Cathode

•  2H⁺ + 2e^– → H2 (reduction).
• 
  
• 
  
• At Anode

4OH-  → 2H2O +O2 +    4e^–  oxidation

 

QUESTIONS

1. Mention the anode and cathode in the electroplating of  a silver spoon with gold.

2.List any two uses of electroplating.

QUESTIONS

1.List the uses of 

         a. Aluminium

         b. Copper

2. Why aluminium is used in overhead cables?

3.Give reason . Aluminium is used  as a building material.

QUESTIONS

In chlor-alkali process 

a. At which electrode chlorine gas is formed?

b. Write a test for chlorine gas.

Uses of sodium hydroxide and chlorine.

       

CHLORINE

                                   

http://www.bbc.co.uk/schools/gcsebitesize/science/add_ocr_pre_2011/chemicals/extractionmetalsrev3.shtml

http://www.gcsescience.com/ex11.htm
http://www.gcsescience.com/ex3.htm