Question

Q3. (10 points) The following shows the absorption spectrum of aqueous solution of V2. Based on complementary color's principle (and emphasizing only at visible range of the spectrum), what is the color of the solution? Explain your answer based on the provided spectrum (mainly for 0.1 M) 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.1M 0.02M 200 300 400 500 600 700 800 Wavelength (nm)

Answer 1

hey
Looking at the spectra, we get absorption between 500 to 600.
so we need to know now, which colour absorbs between this range.
This range is due to absorption by yellow colour.
so, on emitting, it will emit complementary coloyr,
Violet is its complementary.
So, the colour of solution should be bluish/violet.
Thanks
Hope it helped.