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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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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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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BUFFER SOLUTIONS CONTENTS 1. Introductions. 2. Principles of buffering. 3. Applications a. Simple buffering agents. b. "Universal" buffer mixtures. c. Common buffer compounds used in biology. 4. Buffer capacity. 5. Calculating buffer pH a. Monoprotic acids. b. Polyprotic acids. 6. Biblography. INTRODUCTION A buffer is an aqueous
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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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1.John is twice as old as his friend Peter. Peter is 5 years older than Alice. In 5 years‚ John will be three times as old as Alice. How old is Peter now? 2. John’s father is 5 times older than John and John is twice as old as his sister Alice. In two years time‚ the sum of their ages will be 58. How old is John now? 3. Joan is 3 times as old as her sister. In 3 yeas ‚ shee will be two years more than twice the age her sister will be then. What are their ages? 4. Kevin is 4 years older than
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Solutions for Homelessness This great nation of awesome power and abundant resources is losing the battle against homelessness. The casualties can be seen on the street corners of every city in American holding an "I will work for food" sign. Homeless shelters and rescue missions are at full capacity. There is no room at the inn for the nation’s indigent. Anyone who has studied this issue understands that homelessness is a complex problem. Communities continue to struggle with this socio-economic
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Electrolytic Solutions Solutions are sometimes grouped according to their ability to conduct electricity. Substances whose solutions conduct electricity are called electrolytes and those that do not conduct electricity are called nonelectrolytes. Also electrolytes can be strong or weak. Under strong electrolytes we have NaCl and CaCl2 which are ionic compounds‚ HCI‚ HNO3‚ HBr and H2SO4 are under acids and NaOH‚ KOH‚ and LiOH are under bases. Weak electrolytes are ionic compounds and slightly
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