CHAPTER 3 ELECTROLYSIS SEMESTER 1

                                       
























Chapter 6   electrochemistry






ELECTROLYSIS  OF MOLTEN NaCl

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ELECTROLYSIS  OF SOLUTIONS.

Image result for electrolysis of nacl solution


Image result for electrolysis of solutions







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HALF EQUATIONS
  At Cathode

  •  2H+ + 2e → H2 (reduction).


  • At Anode
4OH-  → 2H2O +O2 +    4e  oxidation











Image result for purification of copper by electrolysis


Image result for purification of copper by electrolysis














 
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Image result for electroplating





Electrolysis in industries


QUESTIONS

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

2.List any two uses of electroplating.






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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.

























Electrolysis part 3 aqueous solution





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



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