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Blue and Gold Demonstration

Blue and Gold Demonstration. Blue and Gold Demonstration. Addition of Solution X. Continued Stirring in Air. Addition of Solution X. Continued Stirring in Air. What questions do you have?. Blue and Gold Demonstration. Addition of Na 2 S 2 O 4 a reducing agent.

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Blue and Gold Demonstration

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  1. Blue and Gold Demonstration

  2. Blue and Gold Demonstration Addition of Solution X Continued Stirring in Air Addition of Solution X Continued Stirring in Air What questions do you have?

  3. Blue and Gold Demonstration Addition of Na2S2O4 a reducing agent Continued Stirring in O2 Oxidized Indigo Carmine Reduced Indigo Carmine

  4. Blue and Gold Demonstration Addition of Na2S2O4 a reducing agent Continued Stirring in O2 Oxidized Indigo Carmine Reduced Indigo Carmine

  5. Blue and Gold Demonstration Addition of Na2S2O4 a reducing agent Continued Stirring in O2 Oxidized Riboflavin Reduced Riboflavin

  6. Blue and Gold Demonstration Addition of Na2S2O4 a reducing agent Continued Stirring in O2 Oxidized Fiboflavin Reduced Riboflavin

  7. Blue and Gold Demonstration Oxidized riboflavin fluorescence when irradiated with ultraviolet light

  8. Blue and Gold Demonstration The dark line on figure to the left depicts the change in color intensity as a function of added dithionite for both indigo and riboflavin. What is happening chemically in regions labeled A, B, C, and D? Why doesn’t the color change as shown in the diagonal dashed line? A B C D Color ? Continued stirring exposed to air Successive addition of dithionite

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