BUFFER SOLUTION (ACID) An acidic buffer solution is simply one which has a pH less than 7. Acidic buffer solutions are commonly made from a weak acid and one of its salts - often a sodium salt. Objectives: 1. Measure the pH of the unknown solution first with indicators and then with pH paper. 2. compare the buffer solution with both a strong acid and a weak acid materials: 2 30 mL beakers 2 100mL volumetric flask 1 10mL pipet 2 aspirator 1 50mL graduated cylinder 1 10mL graduated
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ARTICLE IN PRESS Technovation 28 (2008) 633–643 www.elsevier.com/locate/technovation Post-project reviews as a key project management competence Frank T. Anbaria‚c‚Â Elias G. Carayannisb‚c‚1‚ Robert James Voetschd‚2 a Department of Decision Sciences‚ School of Business‚ Funger Hall 415‚ 2201 G Street‚ NW Washington‚ DC‚ USA Department of Information Systems and Technology Management‚ School of Business‚ Funger Hall 415‚ 2201 G Street‚ NW Washington‚ DC‚ USA c The George Washington
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Network Solution‚ Inc. 3 2.1 Profile of Network Solutions’ 3 2.2 Challenge faced by Network Solutions’ 3 3.0 Performance Management 3 3.1 Overview of Performance Management System 4 3.2 Characteristics of an ‘ideal’ performance management system 4 4.0 Network Solutions’ Performance Management System 5 4.1 Ideal characteristics which implemented at Network Solutions 5 4.2 Identification of mislaid characteristics at Network Solutions 5 5.0 Implementation system from Network Solutions 7 5.1
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5 Solution Preparation 1. Why should the solutions be prepared with 0.10M HCl used as solvent? a. What will happen to Fe3+ if the solution was not prepared using 0.10M HCl? b. Give the balanced equation for the 1st hydrolysis of Fe3+. c. What is the color of the product of 1st hydrolysis of Fe3+? d. What is the effect of the product of 1st hydrolysis to the absorbance of the solution? Determination of Analytical Wavelength 2. Why should the solution with
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1. Define the following terms: a. aqueous solution- a solution in water b. colloid mixture of large molecules that will not settle or join with the other substance it is in c. concentration ratio of mass or volume of solute to mass or volume of solvent d. heterogeneous a mixture is made up by two or more different substance which are (mixed) together but are not combined e. homogenous mixture mixture that is uniform throughout f. Henry’s Law An expression for calculating the solubility
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Workshop Five-Ethical Solutions Paper Jackie Marshall June 19‚ 2013 Workshop Five-Ethical Solutions Paper The owner of a company reduced wages by 5% for all employees in 2010 due to the aftereffects of 9/11: an action that was necessary in order to save the company from financial ruin during a very turbulent economy. Since that time‚ no one within the organization has gotten a raise. However‚ the business has now stabilized‚ showing a net profit for the fourth quarter of 2011‚ all of
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FINAL SPEECH (Persuasive Problem-Solution) Purpose: To inform and persuade your audience that a specific problem exists‚ it is serious‚ and it affects them. Time: 6-8 minutes Topic: Choose a topic that interests you and would probably interest your audience (the class). Consider what your audience already knows about this topic and what their attitude about this topic will be. Do not choose something the audience already knows a lot about. This topic must be presented in a persuasive
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A buffer solution can maintains a narrow range of pH even when strong acid are added. In our experiment‚ we can see water is not a buffer‚ water can undergo very big changes when small amounts of strong acid or strong bases are added. When the strong acid‚ 100µl HCl was added into the dd water‚ the pH value changed from 7.38 to 5.83 which mean the dd water has turn into acid. The same phenomenon occurs while strong base‚ 100µl NaOH was added into the dd water. The pH value changed from 7.07 to 9
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Dynamic Hong Kong: from a post-colonial city to a post-metropolis Part 1. Introduction Hong Kong‚ once a British colony after the wars‚ has been well-known as a vibrant metropolitan. After 99 years of British rule‚ Hong Kong was handed over to China in 1 July 1997. After a long period of western culture instillation‚ Hongkongers remain confused about their identity in the recent 16 years of post-colonial period. This struggle in identity can be reflected from the city’s cultural‚ economic and
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purpose of the lab is to determine the mass of the ‘active ingredient’ in a commercial ASA tablet. ------------------------------------------------- ------------------------------------------------- Introduction There are three main theories surrounding acids and bases including the Arrhenius‚ Bronsted-Lowry‚ and Lewis theories. The Arrhenius theory of acids and bases states that acids produce hydrogen ions (H+) in solution while bases produce hydroxide ions (OH-) in solution. Arrhenius was
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