8. Which reaction mechanism (Et, SNI, Ez. SN2) these reactions follow and show the major products of each reaction. DMSO + CN + "OH H0 reflux EIOH CH,OH d) OTs + NaOE -BUOH H.C. a + -BUOK CH,OH + CH,ONa Ph CH,OH

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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.