Anna Powell 2nd I.Title: Acid-Base Titrations AP Chemistry Laboratory #6 II.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
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Aqueous Acid/Base Chemistry Resources: Harris ‘Quantitative Chemical Analysis’ Review: Pure water has a pH = 7 Autodissociation: H2O (( H3O+ + OH- K = [H3O+][OH-]/[H2O] -log[H3O+] = 7 [H3O+] = 10-7 M = [OH-] [H2O] = 55.56 M K = 1.8 x 10-16 ; pKa = 15.74 pKa is the acid dissociation constant; low pKa (strong acid‚ high pKa (weak acid we can also write Kw = [H3O+][OH-] Kw = 10-14 In water‚ pH + pOH = 14 pH scale Strong
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A QUALITATIVE ANALYSIS REPORT ON AN EMPLOYEE’S VIEW OF PERFORMANCE APPRAISAL INTRODUCTION Performance management aims to create a direct link between an individual’s goals‚ the department’s purpose and the objectives of the organization (Marchington et al‚ 2008). However‚ in most present day organizational settings‚ this direct link seems non- existent and this is becoming more and more apparent to the workforce. Lawler (1994‚ p.17) identified lack of skill on the part of the line manager
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and trade. Until recently‚ such research has seen staunch counter-position of two research paradigms: quantitative and qualitative‚ the first deriving from positivism‚ the latter from interventionism. Indeed‚ the positions taken by individual researchers vary considerably between those like Bryman (1988) who argues for a “best of both worlds” approach by suggesting that qualitative and quantitative approaches be combined to those of scholars like Hughes (1997) whom counteracts by stating that such
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This Essay will compare and contrast two different research methods that are qualitative and quantitative methods endeavouring to highlight differences and similarities between them‚ and providing example how they are applied through airline industry. According to Kotler et al.( 2010 p. 124-125) “ Marketing research is a process that identifies and defines marketing opportunities and problems‚ monitors and evaluates marketing actions and performance‚ and communicates the findings and implications
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Acid Rain: The Southern Company (A) Case Analysis | Production Processes and Costs | | | | | Executive Summary In the year 1992‚ the Southern Company that held the Bowen plant‚ a coal-fired steam electric plant had to decide on the various options available to comply with the amendments in the Clean Air Act‚ effective 1995. The Bowen plant was an unusually large plant with a capacity to serve the residential‚ commercial and industrial demands of 1 million people. The Bowen
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Qualitative Research Article Analysis Stacey Simmons NUR/518 Date: April‚ 3‚ 2014 Margaret L. Colucciello‚ PhD‚ RN Qualitative Research Article Analysis Nursing Article: Thornburg‚ P.‚ Myers‚ S‚ Paige‚ V. & Grubaugh‚ K. (2008). Nurses ’ experiences of caring while letting go. Journal of Hospice and Palliative Nursing‚ 10 (6)‚ 382-391. Purpose is Stated‚ Research Design Method is Analyzed Purpose: The researchers of this study proposed to “expand what is known about the meaning of caring among
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Minerals-to-Metals Research Initiative‚ Department of Chemical Engineering‚ University of Cape Town‚ Private Bag‚ Rondebosch‚ 7701‚ South Africa a r t i c l e i n f o Available online 17 June 2010 Keywords: Acid mine drainage Prediction test Sulfide tailings a b s t r a c t Acid mine drainage (AMD) is formed by the microbially catalysed oxidation of sulfide minerals on exposure to moisture and air. It results in the ongoing contamination of water streams with acidity‚ sulfate and metal
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designing a qualitative study. This discussion does not replace the many excellent‚ detailed references on data collection (we refer to several at the end of this chapter). Its purpose is to guide the proposal writer in stipulating the methods of choice for his study and in describing for the reader how the data will inform his research questions. How the researcher plans to use these methods‚ however‚ depends on several considerations. Chapter 1 presents an introductory discussion of qualitative methodological
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nitrogens on this station. Both of these methods rely on the repulsive electrostatic interactions between the positively charged axial component and the post-switching cationic nature of the benzidine station (Figure 5.4). Deuterated trifluoroacetic acid (d-TFA) was added in the solution which resulted in the protonation of the benzidine residue and shuttling of macrocycle in to the biphenol station of the Rotaxane. This was supported by NOESY 1H NMR that showed a shift in the peaks in retrospect to
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