An auxochrome helps a dye to bind to the object that is to be colored.electrolytic dissociation of the auxochrome group helps in binding and it is due to this reason basic substance take acidic dye.
An auxochrome helps. A dye to bind to the object dissociation of the auxochrome group helps in binding. This object is to be colored.electrolytic. It is due to this reason basic substance take acidic dye.