"Synthesis and chemiluminescence of luminol" Essays and Research Papers

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    4/27/11 SYNTHESIS AND CHEMILUMINESCENCE OF LUMINOL Abstract: Chemiluminescence occurs in nature and can be found in everyday products. For example‚ the light omitted by fireflies‚ deep sea fish and glow sticks is a result of this process. Luminol was synthesized from from 3-nitrophthalic acid and then combined with potassium ferricyanide and hydrogen peroxide to omit a blue light. The product of this reaction is very unstable and is made by losing a nitrogen and the electrons go from an excited

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    Luminol is a chemical that exhibits chemiluminescence‚ with a blue glow‚ when mixed with an appropriate oxidizing agent. Luminol is a white-to-pale-yellow crystalline solid that is soluble in most polar organic solvents‚ but insoluble in water (Bortoluzzi‚ Cadore‚ Gallon‚ & Imanishi‚ 2014). Method for the detection of traces of blood in the environment and‚ for this reason‚ can also be used to monitor cleaning and disinfection procedures in units at risk for contamination with blood. Microcrystalline

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    1. In the Luminol synthesis the compound being oxidized was the sodium hydrosulfite. 2. The purpose of the acetic acid is to pronate the dianon organic molecule to make the neutral organic compound‚ Luminol that will crash out of the solvent. If the number of moles were reversed for acetic acid and sodium hydroxide the solution would be very basic‚ and and the amount of Luminol produced would decrease. 3. The cold water was used to decrease the solubility of Luminol in the solvent and prevent further

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    Luminol solutions use oxidation reactions to create the bright‚ luminescent‚ blue emission. In order to discover which additive enhances that glow the most and for the longest‚ I studied the data of several tests with varying enhancers added to the luminol. The substances to be compared in this study are as follows: cysteine‚ Cu (II)‚ silver nanoparticles (AgNPs)‚ and zinc sulfide nanoparticles (ZnS-NPs). The first experiment focused on the reaction between alkaline luminol H2O2‚ the most common

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    Chemiluminescence

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    Joy Harnish Partner: Clinton Foriska Synthesis and Chemiluminescence of Luminol November 4‚ 2014 Abstract Chemiluminescence occurs in nature and can be found in everyday products. For example‚ the light omitted by fireflies‚ deep sea fish and glow sticks is a result of this process. Luminol was synthesized from 3-nitrophthalic acid and then combined with potassium hexacyanoferrate(III) and hydrogen peroxide to omit a blue light. The product of this reaction is very unstable

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    Chemiluminescence

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    Chemiluminescence of Luminol Introduction In this experiment‚ luminol was mixed with hydrogen peroxide (an oxidising agent) resulting in chemiluminescence. The experimentis designed to see how the duration of luminescence is affected by varying temperatures. It has been made to be deliberately inaccurate‚ so another objective would be to see whether subjective observations can be improved by repetition and averaging. Chemiluminescence is the production of light from a release of energy in

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    Chemiluminescence

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    General Chemistry Laboratory 151 Chemiluminescence Introduction: The objective of tis experiment was to carry out systematic series of experiments in order to determine which chemicals and which ratios of chemicals produce the brightest light. Also‚ this experiment will determine which chemical produces the longest light. Chemiluminescence is the emission of light (luminescence)‚ as the result of a chemical reaction. There may also be limited emission of heat. This occurs because the

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    Luminol

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    Using Luminol The purpose of this science experiment was to discover under what conditions can blood give a false result using the presumptive test called luminol. In order to better grasp the experiment‚ research was conducted on several subtopics: the basic concept of luminol‚ the basic concept of artificial blood which is being used for this experiment instead of legitimate blood‚ and substances interferences that could tamper with crime scene results. While the process of the luminol test is

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    Chemiluminescence Lab

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    Group:8 Honors Chemistry Topic: Temperature fluctuations to chemiluminescence The scientist’s project topic revolves around changing the environment in which chemiluminescence occurs in. Can the Fluctuation in temperature of the chemiluminescence environment affect the chemical reaction? The scientist’s independent variable is the temperature of water in degrees fahrenheit ‚and their dependent variable

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    to determine which temperature will allow Luminol to glow at its greatest capacity. My hypothesis is that the glow will illuminate for the longest time in a cold temperature because it will take longer to dissolve. I also predict that in the warmer temperature‚ the glow will be at it’s brightest. Luminol is a chemical‚ which exhibits chemiluminescence with a blue glow. It is a solid that is soluble in most polar solvents‚ but insoluble in water. Luminol is widely used by forensic investigators to

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