ElectroChemistry 3

Previously , we have discussed all about Conductors and Electrolytes

Now , we'll be diving straight into the First main topic of Electrochemistry and that is
Electrolysis !

Electrolysis is defined as the process of decomposing ionic compounds into their respective elements by passing a direct electric current through the compound in a fluid form . 

- What does that mean ? 
When electricity is passed through an electrolytic solution , the ions move towards the electrodes according to the charges . That is , cations to cathode and anions to anode .

- Electrolysis is carried out in Electrolytic cell

- What is an Electrolytic cell ? 
It is a setup in which there are two electrodes , anode and cathode respectively . Anode is connected to the negative terminal while cathode is connected to the positive terminal of the battery .




This is how an electrolytic cell looks . We'll discuss about some terms which are mentioned in the diagram above like Salt Bridge , and the different equations written soon 

Oxidation and Reduction :

Oxidation : Oxidation is the loss of electrons during a reaction by a molecule, atom or ion .

Reduction : Reduction is the gain of electrons during a reaction by a molecule, atom or ion .

In an electrolytic cell , 

           - At anode , Oxidation takes place

           - At cathode , Reduction takes place

A small anagram to remember that is 
      anOx , redCat

where 'an-' is anode , 'Ox-' is oxidation , 'red-' is reduction and 'Cat-' is cathode . 

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