What is color or definition of color
What is color? The carbonyl and ethene (vinyl) teams have chromo‐phoricproperties solely once they area unit gift in the molecule in multiple conjugated order. Thus, ketone is colorless, whereas diacetyl is yellow, as is benzil which is deeper yellow and triketopentane is yellow orange. Since it is the delocalization of pi-electrons that is said to the assembly of color, it is evident from these examples that such delocalization accompanies multiple conjugated unsaturation.
What is Chromophore
O.N. Witt determined in 1876 that colored compounds contain bound unsaturated teams that he known as chromophores and compound containing a chromophore is known as a compound. Once bound teams known as auxochrome are gift within the chromogena dye is obtained.
What is Auxochrome
Auxochromemay be either acidic or basic like ‐OH or ‐NH2. different auxochromes include ‐COOH, ‐SO3H, ‐NR2these teams type salts with either acids or alkalies. they additionally type atomic number 1 bonds with bound teams (‐OH of polyose or NH2of wool, silk).
These above two compound both are responsible for making color on a substance. Chromophore and auxochromes creates some color compound while mixing with acidic and basic medium. This is a short discussion about coloring substances.