explain the term electrolysis???
Answers
Electrolysis
Electrolysis is a chemical process in which the direct electric current (I) is passed through an electrolyte containing ionic compounds, which can be in either the molten state or aqueous phase. During electrolysis, the anion moves toward the anode and the cation moves toward the cathode. The experimental setup in which electrolysis takes place is called an electrolytic cell.
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ELECTROLYSIS
⟹Electrolysis is the process by which electric current is passed through a substance to bring about a chemical change.
⟹Chemical change is a process in which a substance loses or gains an electron.
⟹The process is carried out in an electrolytic cell , an apparatus consisting of positive and negative electrodes held in to a solution containing positive and negatively charged ions(electrolyte).
⟹Electric current enters through the negativelu charged electrode (cathode) .
⟹Components of the solution travel to this electrode , combine with the electrons and are tansformed(reduced).
⟹The products may be neutral elements or new molecules.
⟹Components of the solution also travel to the anode(positively charged electrode) and get oxidised to neutral elements or new molecules.
Uses of ELECTROLYSIS:-
■ Electrolysis is used extensively in metallurgical processes , such as in extraction(electrowinning) or purification (electrorefining) of metals from ores or compounds and in deposition of metals from solution.
■ Metallic sodium and chlorine gas are produced by the electrolysis of molten sodium chloride.
■ Electrolysis of an aqueous solution of sodium chloride yields sodium hydroxide and chlorine gas.
■ Hydrogen and oxygen are produced by the electrolysis of water.
In Electrolysis,
⊙ Anode is the positively charged electrode.
⊙ Cathode is the negatively charged electrode.
⊙ The ions that move towards the anode are called anions and are negatively charged.
⊙ The ions that move towards the cathode are called cations and are positively charged.