The complex ion [Co(OH₂)₆](³⁺)is blue in an aqueous solution.Estimate the wavelength of maximum absorbance. A) 200 nm B) 300 nm C) 400 nm D) 600 nm E) 800 nm

Question

Quizplus · Accepted Answer

The complex ion [Co(OH₂)₆](³⁺) is blue in color, which suggests it absorbs light in the red-orange-yellow regions of the spectrum and transmits light in the blue region. Therefore, the wavelength of maximum absorbance should be around 600 nm, which is in the red part of the spectrum. Thus, the correct choice is D).

The Complex Ion [Co(OH2)6](3+)is Blue in an Aqueous Solution

The Complex Ion [Co(OH₂)₆](³⁺)is Blue in an Aqueous Solution