Luminol dianion is treated with hydrogen peroxide and potassium ferricyanide which results in formation of triplet excited state dianion and liberation of nitrogen gas. Once formed, the triplet dianion undergoes intersystem crossing to form a singlet excited state. As the molecule returns to the ground state, it emits bluish-green light. 9. (1) Draw the curved arrow mechanism showing conversion of B to C. (Hint: Think of Diels- Alder reaction mechanism) :0

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Q: b)

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Q: А. В. с. D. Е.

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Q: dho

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Q: following

A: According to the question,  Wavelength = 665 nm Molar extinction coefficient  = 5200 M-1 cm-1

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Q: A B Which compound(s), if any, can be distinguished from the others by their UV-VIS spectra? None,…

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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.