4 13 May 2012 Redox Reactions Lab Report We wished to investigate the oxidation number of a metal that would form aqueous ions when reacted with an aqueous nitrate salt. For this purpose‚ we chose to investigate the reaction of solid copper metal‚ in the form of a wire‚ with aqueous silver nitrate. Before we began the lab‚ we hypothesized that when silver nitrate‚ AgNO3‚ reacts with copper‚ Cu‚ the oxidation number of silver (Ag) ions that form will be +1. The unbalanced chemical equation
Premium
theoretical oxygen demands for sodium acetate =0.024 x (16x2) =0.768 g oxygen/g sodium acetate 3. What percent of oxidation of glucose is obtained in the COD test ? (3marks) The experimental COD (mg/l)value for glucose =[(24.85-19.90)x0.1002 x8000]/20.00 = 198.396mg/l Oxygen demand of glucose =(198.396/1000)/(300/1000) = 0.661g oxygen/g glucose Percent of oxidation of glucose =[(0.661 g oxygen/g glucose)/(1.067g oxygen/g glucose)]x100% =61.95% 4. Explain‚ qualitatively‚ the
Premium Chemical oxygen demand Acetic acid Carbon
Synthesis of Phenols You can prepare phenols in large quantities by the pyrolysis of the sodium salt of benzene sulfonic acid‚ by the Dow process‚ and by the air oxidation of cumene. Each of these processes is described below. You can also prepare small amounts of phenol by the peroxide oxidation of phenylboronic acid and the hydrolysis of diazonium salts. Pyrolysis of sodium benzene sulfonate In this process‚ benzene sulfonic acid is reacted with aqueous sodium hydroxide. The resulting salt
Premium Oxygen Sodium hydroxide Alcohol
preservation and food industry. Tea catechins have many effects on food‚ especially preventing lipid oxidation by its antioxidant ability. In this report‚ chelating activity of catechins on Fe2+ ions and free radical scavenging ability on chicken meat to prevent rancidity by lipid oxidation at different concentrations and with different types of TC were studied. Keywords: Tea catechin (TC)‚ lipid oxidation‚ antioxidants. 1. Introduction Catechins are a type of antioxidant found in the greatest abundance
Premium Green tea Catechin Antioxidant
Hydrogen Peroxide & Inorganic Peroxy Compounds Hydrogen Peroxide Hydrogen peroxide (H2O2) is the simplest peroxide (a compound with an oxygen-oxygen single bond). It is also a strong oxidizer. Hydrogen peroxide is a clear liquid‚ slightly more viscous than water. In dilute solution‚ it appears colorless. Reactions Decomposition Hydrogen peroxide decomposes exothermically into water and oxygen gas spontaneously: 2 H2O2 → 2 H2O + O2 This process is thermodynamically favorable. It has
Premium Hydrogen peroxide Oxygen
© Drs. XO‚ PHB‚ CWR Crystal & Ligand Field Theory (10.2.1‚ 10.3) CHEM 241 Fall 2014 TM − p.1 Ligand field theory (the MO version of crystal field theory) includes two main components: 1. What holds the complexes together: The set of ligands are held to a metal ion by largely electrostatic forces (although there really is a high degree of covalency). The forces arise from the positive charge on the metal ion and the electric dipoles of the ligands‚ whose negative ends are associated
Premium
So long‚ Gummy Bears! [pic] This demonstration illustrates the vast amount of energy which is available from the oxidation of carbohydrates‚ such as sugar. An excess of oxygen‚ generated by the decomposition of potassium chlorate‚ will react with the glucose in a gummy bear‚ releasing a large amount of energy quickly and dramatically. Introduction: Sugar is a fuel that we use for energy. We can also use it to fuel a chemical reaction. In this reaction‚ the sugar from the gummy bear
Premium Carbon dioxide Water Energy
part of a metabolic pathway involved in the chemical conversion of carbohydrates‚ fats and proteins into carbon dioxide and water to generate a form of usable energy. Other relevant reactions in the pathway include those in glycolysis and pyruvate oxidation before the citric acid cycle‚ and oxidative phosphorylation after it. In addition‚ it provides precursors for many compounds including some amino acids and is therefore functional even in cells performing fermentation. |Contents
Premium Citric acid cycle Cellular respiration Adenosine triphosphate
RESULTS AND DISCUSSION Oxidation-Reduction reaction also known as redox reaction is a process in which there’s a net movement of electrons between reacting species. These types of reactions involve two separate elementary reactions: one that loses electrons and another that gains the electrons that was lost. Gaining of electrons is referred to as Reduction reaction (the species that undergoes reduction is called as oxidizing agent) while losing of electrons is called Oxidation reaction (the reducing
Premium Zinc Oxidizing agent Electrochemistry
of photocatalytic oxidation of benzene‚ which it consumed by active species to generate CO2 and / or H2. Furthermore‚ Figure 6b illustrated CO2 and H2 production on Fe2O3 versus time of irradiation‚ which demonstrates‚ consuming of benzene in the photocatalytic process; however‚ Fe2O3 is less active than the spinel counterpart. In addition‚ phenol generation over Fe2O3 was investigated diligently;Moreover‚ on Fe2O3‚ phenol production detected as the intermediate of the oxidation. It is noteworthy
Premium Oxygen Chemistry Hydrogen