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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HSM/220 Human Services Administration: So You Want To Help People 08/18/2013 Scenario Solution As more and more students drop out of schools is important to put money together in order to open up more programs that will help them gain the educational skills that will ensure that students learn the skills they need to obtain a job and be able to accomplish their tasks successfully. Making this happen will take close attention and a lot of work‚ understanding‚ and conversation. To define
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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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Pfizer Inc and Sanofi S.A. Analysis 2012 5/14/2012 Introduction This report pertains to the analysis of the companies Pfizer Inc and Sanofi S.A. Pfizer Inc is a major player in the global pharmaceutical industry and is driven by the vision of improving the life and health of the consumers through innovative discoveries and solutions. The company is diversified geographically and the global healthcare portfolio comprises of human as well as animal biologic & vaccines and small molecule
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Case solution: Ethical Dilemma What course themes do you see present in the case? Experimental exercise Who Can Catch a Liar is about emotional intelligence and its effect on the productivity of the workers at workplace. Human have inherited the ability to respond various stimulus differently. Being differs from each other in terms of their personality‚ behavior‚ needs‚ wants‚ demands and expressing their emotions at different situation. Emotional intelligence is the ability of the person to know
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world today at our global civilization there are many problems that leap to our attention and everyone has a vested interest‚ one such example is food. Science has been tinkering with nature for the past one-hundred years trying to come up with solutions to help fight famine‚ and as a result‚ man made products have created ever more problems. The easiest way in which an individual or individuals can create change is to effect change in their local communities‚ so others can see an image of what the
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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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Problems and Solutions 1 CHAPTER 1—Problems 1.1 Problems on Bonds Exercise 1.1 On 12/04/01‚ consider a fixed-coupon bond whose features are the following: • face value: $1‚000 coupon rate: 8% • coupon frequency: semiannual • maturity: 05/06/04 • What are the future cash flows delivered by this bond? Solution 1.1 1. The coupon cash flow is equal to $40 8% × $1‚000 = $40 2 It is delivered on the following future dates: 05/06/02‚ 11/06/02‚ 05/06/03‚ 11/06/03 and 05/06/04. The redemption value
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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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