Purpose: The purpose of this experiment is to standardize a sodium hydroxide solution and use the standard solution to titrate an unknown solid acid. The equivalent mass of the solid acid will be determined from the volume of sodium hydroxide added at the equivalence point. The equilibrium constant‚ Ks‚ of the solid acid will be calculated from the titration curve obtained by plotting the pH of the solution versus the volume of sodium hydroxide added. III.Background Information: Volumetric analysis
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Bacon‚ Toast‚ Sodium Nitrate and Potassium Bromate For Breakfast Samuel Martino Have you ever looked at the ingredients on the side of a food package? There is a lot more than the main food in the package. Usually it has real food then several different chemical compounds and preservatives listed behind the real stuff. In some foods the ingredients include chemical compounds as sodium nitrate and potassium bromate. Sodium nitrite is an ionic compound and is identified by the chemical formula
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of cations using sodium hydroxide (NaOH) aqueous Aims & Objectives Different characteristic cations will form different colors when they are burned or added base. In these two experiments‚ scientist took some sample of barium hydroxide (Ba (OH) 2·H2O)‚ ferric chloride (FeCl3·6H2O)‚ copper chloride (CuCl2· 2H2O)‚ calcium chloride anhydrous (CaCl2)‚ potassium carbonate crystal (K2CO3· 2H2O)‚ strontium chloride hexahydrate (SrCl2· 6H2O)‚ lead nitrate (Pb (NO3) 2)‚ sodium chloride (NaCl) and
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Name : ……………………………………………………………….. Date Due : …………………………………………………………….. Year 12 80% A 70% B AS Level Chemistry 60% C 2008 – 2009 50% D 40% E Below U Questions on % Haloalkanes 2.8 32 1. Chloromethane can be prepared by a reaction between methane and chlorine in the presence of ultraviolet radiation. (i) Outline the mechanism for this reaction. .....................................................................................
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Edward Dickson CHE101 DS-01 Experiment Date 7/21/2013 Report Submitted 7/21/2013 Title: Experiment #8: Ionic Reactions Purpose: In this lab we will work with aqueous solutions of ionic substances and determine if they are soluble. If the solution appears milky than it is known as a precipitate reaction‚ meaning it is soluble‚ and that the ions separated and became surrounded by water. Precipitates in this experiment are electrically uncharged. To identify which compounds are
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contracted by a local food manufacturer to determine if sodium benzoate‚ a common food preservative‚ undergoes significant chemical changes at the pH level encountered in the acidic environment of the stomach. Experimental Method Sodium benzoate was prepared by addition of an equimolar amount of aqueous sodium hydroxide (3 M‚ ~ 20 ml) to a benzoic acid (1.256 g‚ 10.3 mmol) /water mixture (10 ml). Benzoic acid is insoluble in water. The hydroxide base rapidly deprotonates the acid‚ producing the benzoate
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Abstract: All the materials were measured and weighed. It was found in the experiment that the yield of copper hydroxide in 40%. Introduction: The copper (II) sulphate is then placed in 100 mL of distilled water. Then 20 mL of CuSO4 is measured and placed 100 mL of distilled water. This can later be weighed to determine the mol of CuSO4 and the mol/L concentration. Then this was used to find out how many mL of 0.5 NaOH solution is needed to react completely with all the copper (II)
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I will admit that I am rather new to the discussion on bigotry‚ privilege‚ and the various -isms. I was speaking with a female friend of mine a few months ago‚ and I remarked that women‚ on average‚ are less able to compartmentalize their emotions than men. She was (justifiably) irate‚ and I qualified myself. You see‚ I had never been explicitly exposed to the socially-propagated idea that women are emotionally unstable. When I found out‚ I felt rather embarrassed in not only being sexist‚ but
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What is Postcolonial Literature? In a broad sense‚ postcolonial literature is writing which has been “affected by the imperial process from the moment of colonization to the present day” (Ashcroft et al‚ 2). In India’s case‚ this includes novels‚ poetry‚ and drama which were written both during and after the British Raj or “Reign‚” which came to a formal conclusion with Indian Independence in August 1947. Although writing from India and other formerly colonized countries such as Nigeria‚ Jamaica
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Enhancing Asset Protection through an adequate monitoring of internal control system by internal audit. By Danique Channer (ID # 0908607 SOBA) November 12‚ 2012 Lecturer: Ms. Simone Bewry Summary of Article Since the start of the global economic recession there has been a reduction in the ablity of organization’s to acquire assets for business operations therefore increasing the need for asset protection against fraud. Studies have shown
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