Name: Lisa Brewer iLab‚ Week # 2 CATIONS AND ANION LAB Introduction The purpose of this week’s lab is to learn to demonstrate a double-replacement reaction of ionic compounds. To accomplish this‚ two ionic compounds will be mixed together and the product will precipitate out of solution. In this procedure‚ the product must be precipitated out of the solution and then weighed. For this lab‚ lead (II) nitrate (Pb(NO3)2) and potassium chromate (K2CrO4) will be reacted together to demonstrate
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Qualitative Analysis of Cations Short Overview The most common cations have been placed into five groups based upon solubility in aqueous solutions when different reagents are added. The reactions which occur are useful in identifying the presence of these cations in unknown samples. The process of identifying the cations is called qualitative analysis. The purpose of this experiment is to identify which cations are present in unknown solutions. A data sheet was not prepared for this experiment
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REVISED A01_REND6289_10_IM_FM.QXD 5/7/08 12:57 PM Page i Instructor’s Solutions Manual Quantitative Analysis for Management REVISED A01_REND6289_10_IM_FM.QXD 5/7/08 12:57 PM Page ii REVISED A01_REND6289_10_IM_FM.QXD 5/7/08 12:57 PM Page iii Instructor’s Solutions Manual Quantitative Analysis for Management Tenth Edition Barry Render Ralph M. Stair Jr. Michael E. Hanna Michael E. Hanna University of Houston-Clear Lake Upper Saddle River‚ New Jersey 07458 REVISED A01_REND6289_10_IM_FM
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Introduction The goals of this experiment were to determine periodic trends in solubility of group 2 metals. The other goal was to use our knowledge of solubility’s to identify cations present in a single unknown Xe and double unknown XXe. I have hypothesized that the solubility of group 2 elements will decrease as we progress down the periodic table .I think that this will happen because of effective nuclear charge (Zeff) which
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In cation exchange chromatography‚ a negatively charged resin is used. A commonly used resin is Dowex‚ which contains linked sulfonate groups that contribute to its negative charge. As a solution is passed through the resin‚ molecules that exhibit greater positive
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Process of Qualitative Risk Analysis Qualitative risk analysis is the application of methods for ranking the identified risks according to their potential effect on project objectives. This process prioritizes risks according to their potential effect on project objectives. Qualitative risk analysis is one way of determining the importance of addressing specific risks and guides risk response measures Definitions of the levels for probability and impact and expert opinion help correct biases in
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As any form of qualitative or quantitative analysis is not a purely technical process‚ but influenced by the characteristics of the researchers and their disciplinary paradigms‚ critical reflection throughout the research process is paramount‚ including in the design of the study‚ the construction or collection of data‚ and the analysis. “The Framework Method is becoming an increasingly popular approach to the management and analysis of qualitative data in health research; however‚ there is confusion
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Qualitative data analysis What Is Qualitative Analysis? Qualitative modes of data analysis provide ways of discerning‚ examining‚ comparing and contrasting‚ and interpreting meaningful patterns or themes. The varieties of approaches - including ethnography‚ narrative analysis‚ discourse analysis‚ and textual analysis - correspond to different types of data‚ disciplinary traditions‚ objectives‚ and philosophical orientations. What Is Qualitative Analysis? We have few agreed-on canons for qualitative
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In 1860‚ the first instrumental analysis was performed by Robert Bunsen and Gustav Kirchoff who used flames tests that led to the discovery of the elements rubidium (Rb) and caesium (Cs). After this‚ this method was used everywhere to find the chemical make ups of many substances. For example‚ in 2007 there was a huge problem where tainted pet food would cause many pets to become ill. Qualitative analysis was used and it was discovered that Melamine was found in the pet food which altered the results
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Quantitative and Qualitative analysis Ensuring accuracy in both quantitative and qualitative methods. Accurate data collection is essential in maintaining the integrity of research. Working accurately greatly decreases the possibility of an error occurring in an experiment‚ provides a greater chance of producing expected results and provides knowledge gained only from proven results. Quantitative methods generate numerical data or data that can be transformed into useable statistics. It is used
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