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
Free PH Acid dissociation constant Acid
the success of businesses that have a sound business plan‚ and specific goals they need to accomplish. Human Resource personnel have to be very in-tuned with the overall business plan of the company in order for it to be a quantifiable strategic partner. During this brief paper‚ I will discuss some key elements and specific tasks a Human Resource department can accomplish for a company. I will discuss specific tasks that can be conducted by Human Resource that show that HR is a valuable and necessary
Premium Human resources Management Strategic management
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
Premium Concentration Analytical chemistry Solution
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
Free Ethics Employment Profit
CHAPTER 1 Understanding the issues 1. (a) horizontal combination—both are marine engine manufacturers (b) vertical combination—manufacturer buys distribution outlets (c) conglomerate—unrelated businesses 2. By accepting cash in exchange for the net assets of the company‚ the seller would have to recognize an immediate taxable gain. However‚ if the seller were to accept common stock of another corporation instead‚ the seller could construct the transaction as a tax-free reorganization
Premium Balance sheet Generally Accepted Accounting Principles Asset
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
Free PH Buffer solution Acid dissociation constant
again have faith in the sanctity of marriage. The feeling of a happy and healthy marriage cannot be known before you actually say your vows. It is only something people only hope to feel and think that they will feel once they’ve say "yes" to their partner. What’s crazy is that this is something a person must know. You cannot go into something and just hope it will work out. You have to prepare. Which is why I am proposing that there are mandatory pre-marital counseling sessions that assess the likelihood
Premium Marriage Divorce Alimony
CHAPTER 2 How to Calculate Present Values Answers to Problem Sets 1. If the discount factor is .507‚ then .507 x 1.126 = $1. Est time: 01-05 2. DF x 139 = 125. Therefore‚ DF =125/139 = .899. Est time: 01-05 3. PV = 374/(1.09)9 = 172.20. Est time: 01-05 4. PV = 432/1.15 + 137/(1.152) + 797/(1.153) = 376 + 104 + 524 = $1‚003. Est time: 01-05 5. FV = 100 x 1.158 = $305.90. Est time: 01-05 6. NPV = −1‚548 + 138/.09 = −14.67 (cost today plus the present value of the perpetuity)
Premium Time value of money Net present value Cash flow
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
Premium PH Acid Acid dissociation constant
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
Premium Silver Imperial units Gold