with youret ilr absorbs visible light. Explain whether this value is consistent

Question

with youret ilr absorbs visible light. Explain whether this value is consistent region of ellaw er dip ja Record the results of pH tests and dye color for your dye. 2pts. Color in acid e Color in base t pin D. QUESTIONS, 14 points 1. Citing the results of class fabric strips, briefly state whether the structure of the aromatic amine or the structure of the coupling compound has a larger effect on the dye color produced. Offer an explanation for the effect. 2pts The Couphn Comtun effect had a nne dye color produted. Based on he resuits the Napthal wa mae tro and 8- Aniinio-I naphthenesulfnic crel ammniu sal uuas move Purple lred. The N 2 Napt hol was more Soluble becouuse 2. The dyes synthesized today have acidic and basic functional groups. A dye molecule is r most acidic form with pKa's labeled. a's shown, draw t shown with its functional groups in thei a. Taking into account the pk he structure of the dye that would dominate át pH 14 when cloth and dye were combined in a NaOH solution. Does the dye become more or less soluble in basic solution? 2 pts b. less thon pKa 2 uss thon s0 o less Soluble because thore ore less Plales (0-Hbords) f hydrgen boding to occiur

Explanation / Answer

Azo dye has a much much high contrribution to the colour. Infact it is the only contributing factor sometimes as the amines are different coloured than the dye.

The colour is due to extended conjugation or delocalisation of electron in the structure and  presence of double and triple bonds. The azo-dye absorbs a specific frequency and we see complementary colour. This does not happen in the amine.

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