\t\t\tArrhenius ConceptAcid is the substance when dissolved in water, increases the concentration of H+ ions.The base is the substance when dissolved in water, increase the concentration of OH- ions.Bronsted-Lowry ConceptAcids are the proton donor.Bases are the proton acceptor.Lewis ConceptSuch species that accepts the pair of electrons (an electrophile) and will have vacant orbitals are known as Lewis acid.Such species that donates the pair of the electron (a nucleophile) and will have a lone pair of electrons are known as Lewis base.Chemical formulaSuch compound whose chemical formula begins with H, for example HCl (Hydrochloric acid), H3BO3 (Boric acid), CH2O3 (Carbonic acid). Although CH3COOH (Acetic acid) is an exception.Such compounds whose chemical formula ends with OH, for example KOH (Potassium hydroxide), NaOH (Sodium hydroxide).pH scale (concentration of hydrogen ions in a solution)Less than 7.Greater than 7.Physical CharacteristicsSour in taste.Bitter in taste.Gives burning sensation.Odorless (except ammonia).Acids are usually sticky.Bases are slippery.Reacts with metals to produce hydrogen gas.Reacts with fats and oils.Phenolphthalein IndicatorIt remains colorless.It gives pink color.\t
Acid are sour in taste and base are bitter in taste and many diffence between acid and base

1.	Diffense by acid and base
Answer»		Basis For Comparison	Acids	Bases
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