11. Consider the pKa values (for the bolded H) in the structures below. HO HO, pKa = ~10 pKa = ~17 pKa = ~4 %3D %3D %3D Explain these differences in the pka values. (Hint: Draw each molecule if it was deprotonated. The more stable the deprotonated structure is means it is easier to deprotonate, and therefore the more acidic (lower pKa) the molecule! Consider resonance structures for the deprotonated structures to help explain the differences in pKa. HOeM HO de anolisest S kr abubal woR

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UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.