UV / Vis can be applied to determine the kinetics or rate constant of a chemical reaction. The reaction, occurring in solution, must present color or brightness shifts from reactants to products in order to use UV / Vis for this application. For example, the molecule mercury dithizonate is a yellow - orange color in diluted solution (1 * 10 ^ - 5 M), and turns blue when subjected with particular wavelengths of visible light (and UV) via a conformational change, but this reaction is reversible back into the yellow "ground state ''.
if a solution is blue what color will it show the most response in terms of absorption
yellow - orange