Which wavelength would be absorbed strongly by a red-colored solution?

A red-colored solution absorbs strongly in the blue region of the visible spectrum, typically around 450 nm. This absorption occurs because the color we perceive is the result of the wavelengths of light that are not absorbed by the substance. In the case of a red solution, it reflects red light (which has longer wavelengths, around 620-750 nm) while absorbing light in the shorter wavelengths, like blue (around 400-495 nm).

The wavelength of 450 nm falls into the blue spectrum, which is complementary to red. Therefore, this wavelength is absorbed strongly by the red-colored solution, leading to its characteristic color. Understanding the color absorption principles in solutions is critical in fields like clinical chemistry for applications in spectrophotometry and analysis of substances.

The other wavelengths provided (585 nm, 600 nm, and 650 nm) correspond to yellow, orange, and nearby red spectral regions, respectively. Since the solution is colored red, these wavelengths would be less absorbed and more likely reflected, thus contributing less to the perceived redness of the solution.