Defination of base

According to Arrhenius, BASES are substances which furnish OH^- (aq) ions when in aqueous solutions. They are colourless and odourless substances which are bitter in taste and are slippery and soapy in texture. They are good conductors of electricity and they are highly corrosive. Bases highly soluble in water are ALKALIS. Eg:- NaOH, KOH, etc. Bases which are partially soluble in water are called WEAK bases. Eg:- Zn(OH)2, Ca(OH)2, Al(OH)3, etc.

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