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Acid & Bases (Reactions (can make soluble salts using insoluble base…

- - - - Hcl, sulfuric, nitric
    - - ehanoic, citric and carbonic
      - Equilibrium lies well to the left
- - - - E.g
        
        Phenolphthalein, colourless in acid to pink
        
        Litmus, red in acid to blue
        
        Methyl Orange, red in acid to yellow
- - - - dye changes colour depending
        on above certain pH or below
      - wide range I
        
        mixture of dyes
        
        change colour over broad range of pH
        
        E.g universal indicator
    - - measure electronically
      - more accurate