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    Red Cabbage with ammonia
    Red Cabbage with ammonia
    Hydrochloric acid is added to the ammonia/Red cabbage extract and the colour change followed

    Credit: @AlchemistAngus
    Purple primrose in 0.2M sodium hydroxide
    Purple primrose in 0.2M sodium hydroxide
    Adding 0.1M hydrochloric acid
    Red cabbage indicator in white vinegar
    Red cabbage indicator in white vinegar
    Adding 0.2M sodium hydroxide
    Purple primrose in 0.1M HCl
    Purple primrose in 0.1M HCl
    Addding 0.2M sodium hydroxide. It shows the swirls of alkali as it is added to the solution as it nears the point of neutralisation
    Nickel chloride with ethylenediamine addition
    Nickel chloride with ethylenediamine addition
    3 aliquots of ethylenediamine are added, then hydrochloric acid is added dropwise to reverse the reaction
    Credit: @AlchemistAngus
    Purple Pansy in 0.1M HCl
    Purple Pansy in 0.1M HCl
    0.2M sodium hydroxide is added dropwise
    Purple Primrose extract at pH7
    Purple Primrose extract at pH7
    0.1M HCl is added to give the pink colouration, then 0.2M sodium hydroxide is added dropwise. The purple lines correspond to swirls of alkali as it added to the reaction
    Butterfly pea flower in white vinegar
    Butterfly pea flower in white vinegar
    Addition of sodium hydroxide dropwise
    0.1M Copper sulfate with NaOH and ammonia
    0.1M Copper sulfate with NaOH and ammonia
    0.1M sodium hydroxide is added to form the precipitate of [Cu(H₂0)₄(OH)₂], then ammonia is added to form the [Cu(NH₃)₄(H₂0)₂]²⁺ ion.
    Copper sulfate with ethylenediamine
    Copper sulfate with ethylenediamine
    Stoichiometric aliquots of ethylenediamine are added to copper sulfate then hydrochloric acid added to the reaction
    Credit: @AlchemistAngus
    Haloalkane hydrolysis using fluorescein
    Haloalkane hydrolysis using fluorescein
    Using 2-chloro-2-methylpropane. This reaction is viewed under UV light. Emission of fluorescein is dependent on pH and is quenched as the reaction becomes more acidic

    Credit: @iain_smellie
    Hydrolysis of 2-chloro-2-methylpropane with phenolphthalein
    Hydrolysis of 2-chloro-2-methylpropane with phenolphthalein
    The reaction procedes to produce an alcohol and hydrochloric acid, this causes the phenolphthalein to decolourise at low pH

    Credit: @iain_smellie
    Haloalkane hydrolysis with bromothymolblue indicator
    Haloalkane hydrolysis with bromothymolblue indicator
    Using 2-chloro-2-methylpropane. As hydroysis occurs, the reaction becomes more acidic - causing the indicator to turn from blue to yellow

    Credit: iain_smillie
    Red cabbage indicator with hydrochloric acid
    Red cabbage indicator with hydrochloric acid
    Adding sodium hydroxide, recorded by volumes
    Sloeberry in white vinegar
    Sloeberry in white vinegar
    Adding sodium hydroxide by volum
    Purple petunia with white vinegar
    Purple petunia with white vinegar
    Additions of 0.2M sodium hydroxide. Beautiful tranisition
    Purple petunia in 0.1M hydrochloric acid
    Purple petunia in 0.1M hydrochloric acid
    Purple petunia raw images
    Purple petunia raw images
    Photos used to determine RGB values for the reaction
    Purple petunia extract
    Purple petunia extract
    Shows the addition of acid - moving to pink colouration, then once acidic adding alalki forms the green colour
    Aquilegia leaf extract in vinegar
    Aquilegia leaf extract in vinegar
    Additions of 0.2M sodium hydroxide. Width of columns represents volume of alkali added. One of my first plots
    Aquilegia leaf in vinegar vs. pH
    Aquilegia leaf in vinegar vs. pH
    Measuring pH with addition of 0.2M sodium hydroxide
    Methyl orange in sodium hydroxide
    Methyl orange in sodium hydroxide
    Additions of hydrochloric acid
    Margaret's Red Dahlia
    Margaret's Red Dahlia
    In white vinegar with additions of 0.2M sodium hydroxide
    Poinsettia in white vinegar
    Poinsettia in white vinegar
    Additions of 0.2M sodium hydroxide

    Poinsettia raw images
    Poinsettia raw images
    Photos taken through the experiment to find the RGB values with addition of alkali

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