AMINO ACIDS BY MEANS OF TITRATION CURVE ABSTRACT The aim of the experiment was to identify an unknown amino acid through acid-base titrations which was prepared in water to form an acidic solution. Each group prepared unknown amino acid hydrochloride. The pre-prepared basic solution was slowly added to the amino acid solution and pH change was closely observed using the pH meter. During these titrations the amino acid converted from cation to zwitterion to anion; zwitterion is an amino acid with
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Acid Rain Definition: The term acid rain refers to what scientists call acid deposition. It is caused by airborne acidic pollutants and has highly destructive results. Scientists first discovered acid rain in 1852‚ when the English chemist Robert Agnus invented the term. From then until now‚ acid rain has been an issue of intense debate among scientists and policy makers. Acid rain‚ one of the most important environmental problems of all‚ cannot be seen. The invisible gases that cause acid
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Ethanoic Acid Advantages: Ethanoic acid is non-toxic and is a weak acid‚ meaning it will not do any damage to most surfaces as it does not corrode or bind to other metals‚ therefore can be easily removed through washing or rinsing it. Disadvantages: Ethanoic Acid is the slowest de-scaler of the three acids‚ and is therefore the least effective. It also may cause an unpleasant smell‚ and can have a negative effect on the taste of coffee meaning one would need to spend longer time rinsing and cleaning
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Lab 1: Acid/Base Properties of an Antimicrobial Agent 09/03/13 Purpose The purpose was to determine the acid and base properties of the antimicrobial agent sodium benzoate. Theory Sodium has mainly been used in food processing to avoid growth of bacteria and harmful microorganisms. It is commonly used to preserve foods and beverages that have an acidic pH. Rather than benzoic acid‚ sodium benzoate is used because it is generally soluble in most aqueous solutions but benzoic acid is not
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SYNTHESIS OF SILVER NANOPARTICLES AND ITS CYTOTOXIC EFFECT AGAINST THP-1 CANCER CELL LINE 1 * Department of Biotechnology‚ Modern College‚ Shivajinagar‚ University of Pune‚ Pune‚ India. Mrs Rebecca Thombre email rebecca.thombre@gmail.com Telephone 9822224957 020 400966725 ABSTRACT: Nanotechnology is a field of science which involves the synthesis and applications of nanoparticles. Silver nanoparticles (AgNp) have applications in various fields due to their unique
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Worksheet - Acids‚ Bases and Salts 1. I am pure water. When heated my pH (increases‚ decreases)‚ because more of my water molecules dissociate. 2. I am a 0.020 M solution of weak acid‚ HA. If I only dissociate to the extent of 1.50%‚ what is the value of my Ka? 3. I am a 0.20 M solution of hydrocyanic acid‚ HCN‚ with a Ka of 4.93 x 10¯ 10 . What is my pH? 4. I am a buffer made from 0.10 M acetic acid and 0.15 M sodium acetate. If the Ka for acetic acid is 1.77 x 10¯ 5 ‚ what is my pH? 5. I am
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women are able to take care of children through assistance. Most families in the world take assistance from other to take care of their children. For example‚ the government of US helps families who live there‚ and it gives them clothes‚ food‚ money‚ and scholarships to complete their education. In addition‚ there are many groups of people which help people such as charities. They take money from other people as donation to help people who need to take of children. People always give money to educational
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involve the reaction of an acid and a base to produce a salt (ionic compound) and water. Acid + Base ( Salt + Water □ In this lab‚ sulfamic acid (a weak acid which contains one acidic hydrogen) will be used: H2NSO2OH(aq) + NaOH(aq) ( NaOSO2NH2(aq) + H2O(l) (Net Equation: H+(aq) + OH-(aq) ( H2O(l)) □ Titration is a process of neutralization □ Titration is commonly used to determine the concentration of an acid or base in a solution.
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Megan Garber Professor Keltner Composition 1 3 November 2013 The Ways Media Portrays Women Throughout today’s society‚ media contributes to almost everyone’s daily life. From informative news channels to comical television shows‚ media proves to be effective in advertisement‚ releasing messages and informing the audience. Although media proves to be wildly effective in advertising‚ releasing messages and informing the audience‚ periodically destructive and misleading messages are provided
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without pay. Once we are a cathecist‚ we’re a cathecist forever. Every Christian is a cathecist. “Are you a Christian?” therefor you are a cathecist. We are FREE from Failure of Christians duties‚ Refusal to care for others‚ Earthly comforts or Exclusive relationships and Egoistic tendencies or Excuses. We should not be STUCK from Self-centeredness‚ Temptation‚ Unwillingness to work or Unfit‚ Cultural stubborness or Complacemency and
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