ELECTROLYTES - ELECTROLYSIS - ELECTROLYTIC CELL
 
 
 
ELECTROLYTES
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   Substances, which ionize in aqueous solution into positive and negative ions and conduct electricity are    known as ELECTROLYTES . Electrolytes also conduct electricity in molten state.
   Example:
   NaCl , HCl , HNO3, H2SO4, KCl , CuSO4 , ZnSO4 etc.
TYPES OF ELECTROLYTES
   There are two types of electrolytes:
   1.
Strong electrolytes.
   2.
 Weak electrolytes.
STRONG ELECTROLYTES
   Compounds that ionize to greater extent in aqueous solution and consequently conduct large amount if    electric current are known as STRONG ELECTROLYTES.
   Example:
   NaCl , KCl , CuSO4 , ZnSO4 , KOH etc.
WEAK ELECTROLYTES
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   Compounds that ionize to very small extent in aqueous solution and consequently conduct very small    amount of electric current are known as WEAK ELECTROLYTES.
   Example:
   Acetic Acid (CH3COOH), Benzoic Acid (C6H5COOH),
NON-ELECTROLYTES
   Substances, which do not ionize in aqueous solution into positive and negative ions and hence do not    conduct electricity are known as NON- ELECTROLYTES . They are covalent compounds and mainly    organic in nature.
   Example:
   Urea, Benzene, Sugar, Ethanol, Chloroform , ether etc.
ELECTROLYSIS
   The chemical change caused by the passage of an electric current through a solution of an electrolyte is    called "Electrolysis".
OR
   A process in which an electric current is passed through the solution of an electrolyte and due to    passage of electric current, positive and negative ions move towards their respective electrodes is called    "Electrolysis".
ELECTROLYTIC CELL
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   The process of electrolysis is carried out in a cell which is known as "Electrolytic cell".
   An electrolytic cell consists of a container (or beaker) that contains an electrolytic solution.
   The cell contains two conducting plates called electrodes.
   These electrodes are connected to the terminals of D.C. power supply.
   The electrode connected to positive terminal of power supply is called anode.

   The electrode connected to negative terminals of power supply is called cathode.

   Electric current enters through anode and leaves from cathode.
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