Chemistry Investigatory Project To determine minimum amount of Bleaching Powder Required to disinfect different samples of Water. INDEX I. Introduction o Purification of Water o History of Water Purification o Bleaching Powder II. Experiment o Aim o Requirements o Theory o Procedure o Observations o Result o Precautions Introduction 98% of the Earth’s water is present in the oceans with an average salinity of 3.5%. The remainder of the
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year the company acquired its first plant site in Oakland‚ paying $3‚000 (The Clorox Co. Website) for it. In 1914‚ the name Clorox was suggested by an engineer for an equipment supplier‚ Abel M. Hamblet. The name was derived from "chlorine" and "sodium hydroxide‚" the two active ingredients in the bleach. Hamblet also drew a rough sketch of a diamond with Clorox written in the center and the
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for molecules to react with each other. A catalyst affects the rate of reaction not by increasing the number of collisions‚ but by making more of the collisions that do occur successful. Ordinary household bleach is an aqueous solution of sodium hypochlorite‚ NaClO‚ this contains little more than 5% NaClO by mass. Bleaching is caused by the ion. Under normal circumstances this ion breaks down slowly giving off oxygen gas and the chloride ion‚ . In order to speed up this reaction a catalyst is
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81 kcal/mol 62.55 cal/degree mol 10.68 cal/degree mol 6.16 kcal/mol Preparation Nitrosyl chloride can be prepared by the reaction of nitric oxide with chlorine: 2NO + Cl2 → 2ClNO Also‚ nitrosyl chloride is produced by the action of chlorine on sodium nitrate; or by the reaction of nitrosyl sulfuric acid with hydrochloric acid: NaNO3 + Cl2 → ClNO + NaClO2 ONHSO4 + HCl → ClNO + H2 SO4 Nitrosyl chloride also is obtained as a byproduct in the manufacture of potassium nitrate from potassium chloride
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Procedure: Several different chemical mixtures were poured into the well plate and observed. These included sodium bicarbonate and hydrochloric acid‚ bromothymol blue and hydrochloric acid‚ ammonia and bromothymol blue‚ hydrochloric acid and blue dye‚ blue dye and sodium hypochlorite‚ potassium iodide and lead nitrate‚ sodium hydroxide and phenolphthalein‚ hydrochloric acid and phenolphthalein‚ sodium hydroxide and sliver nitrate‚ ammonia and silver nitrate‚ and ammonia and copper (II) sulfate. Some mixtures
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carbonyl- containing samples were given to the group for examination. The samples were analyzed through different tests namely the involvement of the solubility of alcohols in water‚ the Lucas Test‚ the Chromic Acid Test or also known as Jones Oxidation‚ the 2‚4-Dinitrophenylhydrazone (2‚4-DNP) Test‚ the Fehling’s Test‚ the Tollens’ Silver Mirror Test‚ and the Iodoform Test. The solubility of alcohols in water test showed that the sample‚ benzyl alcohol was immiscible while ethanol was the most
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Acetate formula | CH3COO- | 5 | Ammonia formula | NH3 | 6 | Nitric acid formula | HNO3 | 7 | Phosphoric acid formula | H3PO4 | 8 | Sodium phosphate formula | Na3PO4 | 9 | Calcium carbonate formula | CaCO3 | 10 | Ammonium sulfate formula | (NH4)2SO4 | 11 | Carbonic acid formula | H2CO3 | 12 | Sodium bicarbonate formula | NaHCO3 | 13 | Sodium hydroxide formula | NaOH | 14 | Calcium hydroxide formula | Ca(OH)2 | 15 | Ethanol formula | C2H5OH | 16 | Hydrobromic acid formula |
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29 Heat and Volume Effects Experiment 9 ………………………………………………………………………….31 Flame Test Experiment 10 ………………………………………………………………………..32 Electromotive Series Experiment 11 ………………………………………………………………………...33 Oxidation – Reduction Reactions/ Some Aspects of Corrosion Experiment 12………………………………………………………………………….35 Colligative Properties GENERAL INSTRUCTIONS TO THE STUDENTS Apparatus ▪ Check each piece of apparatus‚ which you
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Report on Hand‚ Foot‚ Mouth‚ and Disease | Report Done by: Carmen Ng | | | Public Health Module Project Supervisor: Dr Mark Lim AY 2013/2014 Public Health Module Project Supervisor: Dr Mark Lim AY 2013/2014 Contents Page 1. Introduction Page 2 2. Background of HFMD Page 2 3.1. Definition of HFMD 3.2. Symptoms of HFMD 3.3. Causes of HFMD 3.4. Age group that are more susceptible to HFMD 3
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Associate Level Material Indoor Air Pollution Resources: Chapter 19 of Environmental Science and the EPA web site‚ “Introduction to Air Quality”. Retrieved from‚ http://www.epa.gov/iaq/ia-intro.html Complete the following chart: Pollutant Sources Health effects Is Your Risk Level Acceptable? Solutions Sustainable Replacements‚ when appropriate Radon Natural decay of uranium found in almost all soils. Radon leaks into homes through walls‚ floors‚ and water (EPA‚ 2014). Lung cancer (EPA
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