Some solutions, like copper(II) chloride in water, change visually at a certain concentration because of changed conditions around the coloured ion (the divalent copper ion). For copper(II) chloride it means a shift from blue to green, which would mean that monochromatic measurements would deviate from the Beer–Lambert law.
Some solutions, like copper(II) chloride in water, change visually at a certain concentration because of changed conditions around the coloured ion (the divalent copper ion). For copper(II) chloride it means a shift from blue to green, which would mean that monochromatic measurements would deviate from the Beer–Lambert law.