Concepts Of Acids And Bases
Acids and bases have been given several concepts so that we can recognize them.Mainly Three concepts have been given.They are:
1)Arrhenius concept
=>This concept states that,"A acid is a species which gives [H^+] ion in an aqueous solution and base is a species that ionizes to give [OH^-] in solution."This concept is broadly used than other.Other concepts also follow this concept if these species are dessolved in water or any polar solvent.
2)Bronstate lowry concept.
=>It says that acids are specices that donate proton or H^+ ion while bases are species that accept proton or H^+ ion.According to this concept,water can act as both base and acid.
3)Lewis Concept
=>According to this concept,"Acid is electron pair acceptor and base is electron pair donar."This concept works on that species which is unstable or which haven't got octate state for acid and which has more electron pairs for base.
Lewis acids are BF3,H+,...etc.
Lewis basea are NH3,..etc.
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