State University- San Marcos in room 117 of the chemistry building. The concentrations used in the experiment were both .5 M sodium hypochlorite and sodium thiosulfate. The concentrations of the solutions found in the dumpster were calculated to be .806 M (both sodium hypochlorite and sodium thiosulfate as well). This was found by taking the 6.0% (by mass) sodium hypochlorite and multiplying it by 1 gram of solution‚ 1000 mL and 1 mol NaClO. This result was then divided by the result of 100g of solvent
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reduced (by taking in those electrons) e.g. hydrogen peroxide (hair bleaching)‚ oxygen (respiration) Real Life Application of Oxidation: Swimming-pool water treatment Chlorine or chlorine compounds such as Ca(ClO)2 (Calcium Hypochlorite - usually used) and NaClO (Sodium Hypochlorite) are added to water to form HOCl. HOCL is an oxidising agent and it kills microorganisms by oxidising them (by being reduced itself) When chlorine acts as an oxidising agent it is reduced to the chloride (Cl-) ion
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Chemistry 161 Sample Quiz Chapters 1&2 KEY Harold Note: You have already received a significant figures/scientific notation sample quiz. The first ten problems (20 points) will be of exactly the same type. The numbers will be changed to offend the guilty (those who did not use the sample test as a study guide). 1. The term that refers to the reproducibility of a laboratory measurement is a. precision. b. repeatability. c. accuracy. d. exactness. e. the number of S.F. 2. The distance
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State University – San Marcos in the Chemistry lab. The concentrations used in the experiment were 0.5M of sodium hydroxide and 0.5M of sodium hypochlorite. The concentrations of the solutions found in the dumpster were calculated to be .806 M (both sodium hypochlorite and sodium thiosulfate as well). This was found by taking the 6.0% (by mass) sodium hypochlorite and multiplying it by 1 gram of solution‚ 1000 mL and 1 mol NaClO. This result was then divided by the result of 100g of solvent‚ multiplied
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Sodium hypochlorite‚ also known as chlorine bleach‚ soda bleach‚ or household bleach is a chemical with the formula NaClO. A common way sodium hypochlorite gets into the San Francisco bay is through daily household cleaning products such as laundry bleach. In a survey conducted by The Clorox Company‚ it was found that four out of five households use sodium hypochlorite bleach for their laundry. Since laundry detergent companies are not required to list every ingredient‚ customers are often not aware
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General Science Questions and Answers No. Question Answer 1 The theory of relativity was propounded by Albert Einstein 2 The principal metal used in manufacturing steel is Iron 3 An altimeter is used for measuring Altitude 4 Oology is the study of Bird Eggs 5 Radioactivity was discovered by Henry Bacquerel 6 The metal used in storage batteries is Lead 7 The instrument used to measure the relative humidity of air is Hygrometer 8 Barometer was invented by Torricelli 9 The unit of power is Watt 10
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sodium hypochlorite‚ NaClO (sometimes written NaOCl). Commercial bleaches are created by bubbling chlorine gas into a sodium hydroxide solution (remember this from your “funky redox rxns”?). Some of the chlorine is oxidized to the hypochlorite ion‚ ClO- and some is reduced to the chloride ion‚ Cl- (a disproportionation reaction). The solution remains strongly basic. The chemical equation for the process is: Cl2(g) + 2OH- (aq) ---> ClO- (aq) + Cl- (aq) + H2O (l) The amount of hypochlorite ion present
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compound CCl4 using the Stock system. |a. |carbon(IV) chloride |c. |carbon chloride | |b. |carbon tetrachloride |d. |carbon hypochlorite | ____ 31. Name the compound H2O using the Stock
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Water Technology Hardness of Water: Natural waters containing large quantities of dissolved salts of Calcium (Ca) & Magnesium (Mg) is called hard water. It is a characteristic of preventing lather formation of water with soap. Ca2+ & Mg2+ ions react with soaps which are salts of fatty acids (stearic or palmitic acid) to give insoluble scums or precipitates of calcium or magnesium stearate or palmitate. 2C17H35COO- + Ca2+ → (C17H35COO)2 Ca (scum) 2C17H35COO- + Mg2+ → (C17H35COO)2
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perform a redox titration. To determine the amount of hypochlorite ion present in commercial bleach. Introduction Many commercial products‚ such as bleaches and hair coloring agents‚ contain oxidizing agents. The most common oxidizing agent in bleaches is sodium hypochlorite‚ NaClO (sometimes written NaOCl). Commercial bleaches are made by bubbling chlorine gas into a sodium hydroxide solution. Some of the chlorine is oxidized to the hypochlorite ion‚ ClO-‚ and some is reduced to the chloride ion
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