Question
Luminol Crime-scene investigators use luminol to visualize blood residue. Research luminol and determine its chemical formula and percent composition.
Step 1
The chemical formula of Luminol is C8H7N3O2. This means that one mole of Luminol will have 8 moles of Carbon (C), 7 moles of Hydrogen (H), 3 moles of Nitrogen (N), and 2 moles of Oxygen (O). Show more…
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Luminol Crime-scene investigators luminol and detervisualize blood residue. Research luminol and determine its chemical formula and percent composition.
1. How does luminol detect blood? Discuss its significance in forensic science. 2. Why do you use propylene glycol as the solvent for this reaction? What is the important physical property that is needed? (Synthesis of luminol lab)
Luminol, which is used by forensic scientists to find blood, fluoresces as a result of Diels-Alder-like process. The dianion of luminol reacts with $\mathrm{O}_{2}$ to form an unstable peroxide intermediate that then loses nitrogen to form a dicarboxylate and emit light. The process is similar to that in $14-21$ and $14-22 .$ Propose a mechanism for this process.
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