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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Support Material Exemplar Starter Pages GCE Chemistry B (Salters) OCR Advanced GCE in Chemistry B (Salters): H435 Unit: F336 Chemistry Individual Investigation This Support Material booklet is designed to accompany the OCR Advanced GCE specification in Chemistry B (Salters) for teaching from September 2008. Contents Contents 2 Support Materials 3 Choice of investigation topic 4 Health and Safety 33 Other forms of support 35 Support Materials These support materials should
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Solution Purposes 1.To know the method of preparation and standardization of potassium permanganate standard solution. 2. To grasp the principle‚ the conditions and the method of permanganate titration. 3. To grasp the determination of hydrogen peroxide in hydrogen peroxide solution with permanganate method. Principle Permanganate titration with potassium permanganate solution (KMnO4) as standard solution is one of the oxidation-reduction titration methods. KMnO4 is a vigorous oxidant in an acidic solution
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Abstract The following experiment details the effect of different concentrations of catalase on the production of oxygen and water through the breakdown of Hydrogen Peroxide. In this experiment paper disc where coated in varying concentrations of catalase‚ 0‚ 25‚ 50 75 and 100%. The time taken for the disc to float between two markers on the side of a glass was then recorded. This experiment demonstrates that the higher the concentration of enzyme used the greater the production of oxygen on the
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In this lab it is hypothesized that every chemical reaction which was observed would fall under already set categories (that are: synthesis‚ decomposition‚ single displacement‚ double displacement‚ combustion and neutralization). Synthesis reactions occur when multiple reactants combine to produce a product (i.e. 2H2 (g) + O2 (g) 2H2O (l)). Decomposition reactions occur when a single reactant breaks down into multiple products (i.e. 2KCl (S) 2K (s) + Cl2 (g)). Single displacement reactions occur
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Part I - Introduction Enzymes are proteins that act as catalysts to regulate metabolism by selectively speeding up chemical reactions in the cell without being consumed during the process. During the catalytic action‚ the enzyme binds to the substrate – the reactant enzyme acts on – and forms an enzyme-substrate complex to convert the substrate into the product. Each type of enzyme combines with its specific substrate‚ which is recognized by the shape. In the enzymatic reaction‚ the initial rate
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that atom in a compound. An element’s electronegativity value and other properties affect its oxidation state in different compounds. Decomposition: Some compounds decompose into more than one different element or compound as bonds are broken. Hydrogen peroxide (H2O2)‚ a chemical you may have around your house‚ is stored in a dark container to slow down decomposition‚ which can be caused by heat and light. clues that can indicate that a chemical change has occurred include: production of flames‚ color
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A Qualitative Analysis on the Efficiency of RCA Standard Clean Method using External Visual Inspection(EVI) |Abarro‚ Ghizelle Jane E. | |Department of Mining‚ Metallurgical and Materials Engineering | |University of the Philippines‚ Diliman
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chloride ion or an attached chlorine. If a compound divides into elements in a decomposition‚ a decomposition reaction could be a redox reaction. The electrolysis of water is a redox reaction. With a direct electric current through it‚ water can be separated into oxygen and hydrogen. H2O H2 + O2 The oxygen and hydrogen in the water are attached by a covalent bond that breaks to make the element oxygen and the element hydrogen. Learning more about the conditions for redox reactions will show that the
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a common HYPERLINK "http://en.wikipedia.org/wiki/Enzyme" enzyme found in nearly all living organisms that are exposed to oxygen‚ where it HYPERLINK "http://en.wikipedia.org/wiki/Catalyst" catalyzes the decomposition of HYPERLINK "http://en.wikipedia.org/wiki/Hydrogen_peroxide" hydrogen peroxide‚ which is damaging to the cells‚ into water and HYPERLINK "http://en.wikipedia.org/wiki/Oxygen" oxygen. My investigation is the effect of temperature on the activity of enzyme catalase. In this investigation
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