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Preparation of Salts (Soluble Salts (Reaction with Acids) (Examples (All…

- - - - Titration (produce
        ammonium and
        group one salts)
        
        fill burette with acid and pipette
        with hydroxide/carbonate
        
        add indicator into conical flask
        
        titrate hydroxide/carbonate with acid
        
        until indicator changes colour
        
        note the volume of acid added
        
        repeat experiment without indicator
        
        add same volume of acid
        
        gives solution of salt without
        excess acid or alkali
        
        Heat solution till saturated
        
        allow solution to cool
        to form crystals
        
        Filter to remove excess water/ solution
        
        residue is crystals
        
        wash with cold distilled water
        
        dry crystals using filter paper
  - - - reaction of acid with an
        insoluble substance
        
        add excess carbonate/metal/base into acid
        
        to ensure all acid is used up
        
        warm the reactants with constant stirring
        
        ensure even mixing
        
        excess solid remain as insoluble salt
        
        filter mixture to obtain solution as filtrate
        
        remove excess, unreacted solids
        
        crystallisation done on filtrate
        
        obtain crystals of salt
        
        dried with filter paper
        
        OR evaporation to dryness
        
        for salts that do not
        decompose on heating