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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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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30-Day Meal Plan for People with Diabetes – Week 1 Day 1 Breakfast • 2 (four-inch) whole grain pancakes • 1/2 cup mixed berries • 2 teaspoons sugar-free maple syrup • 1 cup fat-free milk Lunch • Herbed Chicken Soup with Spring Vegetables (find recipe on Food Network.com) • 1 cup tossed salad with 2 tablespoons low-calorie dressing • 1 (one-ounce) whole grain roll • 1 small apple Dinner • 4 ounces grilled salmon • 1/2 cup brown rice cooked with low-fat chicken broth • 1/2 cup cubed cucumber mixed
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OBJECTIVE: Evaluate the technical and economic feasibility of using locally produced hydrogenated castor wax as a substitute for imported stearic acid GIVEN: Demand: 1‚000 bags per month of Stearic Acid (25kg per bag) Thickening agent – 12% of the weight of the final product (30% of product cost) Stearic acid Cost: Price - $1‚600/1000 kgs. FOB USA Sea Freight Cost - $1‚800 per container van (1‚000 bags @ 25kg. per bag) Fixed Ordering Cost – Php 3‚000 per shipment Custom Duty – 10% based
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Science C.A.T Year 9 2014 Advanced by Sara Hamilton 9H Testing Vinegar – Acid Base Titration Aim The aim of this practical experiment was to pair up and measure the concentration of the acid in three different brands of vinegar. We added a base liquid‚ to the three different brands of vinegar until a neutralization reaction occurred. We conducted the experiment using the titration method. Hypothesis My hypothesis is that the vinegar that will have the highest acidic level will be Cornwell’s
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Example Lab Report Experiment 4 1. Judith Anthony‚” Strong Acid/Strong Base Titrations”‚ CHEM 1130‚ T.A-Joseph Kreft‚ Tuesday 8am‚Room 1871‚Donna Ellitnorpe. 2. Purpose of this experiment: The purpose of this experiment is to observe the neutralization reaction that occurs between strong acid and strong base solutions. The technique of titration is used to observe the acid content of the fluid in a car battery. 3. Procedure: Calculate the volume of 6.00 M NaoH that is needed
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PART THREE Renal Acid-Base Balance 1 Acid • • • • An acid is when hydrogen ions accumulate in a solution. It becomes more acidic [H+] increases = more acidity CO2 is an example of an acid. HCl 2 H+ H+ ClH+ H+ ClH+ 7 ClpH ClCl- As concentration of hydrogen ions increases‚ pH drops Base • A base is chemical that will remove hydrogen ions from the solution • Bicarbonate is an example of a base. NaOH Na+ OH- H + ClH+ ClNa+ OHH+ ClH+ Cl- Na+ OHH+ ClNa+ OH- 2 7 pH Acids and basis neutralize
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Acids vs Bases In chemistry‚ when some elements are mixed‚ the compounds that are formed can be classified depending on its characteristics‚ just like acids and bases. Acids are defined as compounds that donate a hydrogen ion‚ H+‚ to another compound. Bases are the chemical opposite of acids. They both are different in many ways. One way in which acids and bases differ is the pH and the pOH. The pH is a number used to denote the hydrogen-ion concentration‚ or the acidity‚ of a solution. In the
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Aromatherapy oils contain more fatty oils than that of essential oils‚ however‚ they do not evaporate as quickly as essential oils‚ nor are they as highly scented. Once of the best features of aromatherapy citrus carrier oil is that it can boost your spirit as well as your metabolism
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Experiment 5 The Quantitative Determination of an Acid in Carbonated Beverages Thomas Canfield Kelly Caddell Chemistry 144B T.A. Brock Marvin 15 October 2012 Methods: Two sodas containing citric acid were investigated in this experiment. Each soda was titrated using one of the two experimental methods. These methods are the traditional titration and the modern titration. Carbonic acid was already removed from the soda by boiling it. Both of the two different titration methods
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