Introduction: In this lab‚ we measured the acid-base strengths of seven separate organic compounds. The lab was painless to perform‚ it consisted of adding a small amount of one of the organic compounds to a well‚ and testing the pH via testing paper. The color of the paper was then analyzed to determine what the pH of the compound was. The structures were benzenesulfonic acid‚ benzoic acid‚ benzyl alcohol‚ benzylamine‚ p-cresol‚ and p-toluidine. My initial hypothesis about the acidity/basicity
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Acid/ Base Titration Lab Design III Materials: Goggles HCl NaOH Distilled Water Label Beaker Graduated Cylinder Pipet Stirring rod Buret with clamp Stopper Ring Stand Utility Clamp Computer Computer Program pH probe Procedure: 1) 2) Goggles were put on. 3) 0.1 M NaOH solution was made using 0.4 g NaOH and 100 mL distilled water. The ingredients were added together in a beaker and stirred. 4) The buret was standardized by adding 10 mL of distilled water‚ rolling
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BEHAVIOUR OF AMINO ACIDS IN SOLUTION Abstract In this practical the acid-base behaviour of amino acids was assessed. Amino acids are amphoteric. They have the basic (amine) and the acidic (carboxylic) functional groups. These show the same type of equilibrium reactions that all weak acids and bases undergo‚ and the relative amount of each can be altered by adjusting the pH of the solution. For this practical glycine was used as a model to show this unique nature of amino acids. A series of
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Vinegar Milk (yakult) Litmus paper Beer Ampalaya fruit Distilled water Calamasi PROCEDURE: 1. Prepare the materials that needed in experiment. 2. Using dropper‚ get a little amount of coke‚ vinegar‚ milk‚ beer‚ and distilled water then drop to red and blue litmus paper. Record the result. 3. Squeeze the calamsi‚ using the dropper get a little amount of liquid then drop to red and blue litmus
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(room temperature‚ humidity etc.) Materials: 2 apples A stopwatch A camera 7 cups 7 plates Paper and pen (for labels) 300mL of vinegar 300mL of orange juice 300mL of lemon juice 300mL of milk 300mL of water 300mL of methylated spirits 300mL of baking soda solution 1 serrated knife Method: 1. Gather all materials and determine the pH of the 7 substances used. 2. Make the baking soda solution by dissolving the powder into water at a ratio of 1:3
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and bought on a huge scale. Africa has seen four great phases of slave trades. The trans-Saharan‚ Red Sea and Indian Ocean slave trades are oldest slave trades which the continent experienced during 800 AD. In these slave trades‚ Africans were carried from the southern Saharan desert‚ internal of the Red Sea‚ and internal of the coast of Eastern Africa‚ and were transported to Northern Africa and the Middle East. Trans-Atlantic Slave trade is the most researched and a largest slave trade of all during
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The Trans-Atlantic Trade System refers to all of the trade done between Europe‚ Africa‚ and the Americas across the Atlantic Ocean. Sugar‚ slaves‚ and spirits fueled the entire triangular trade. Slaves were exchanged from Africa for rum‚ rum was produced as a byproduct of sugar‚ sugar was grown by slaves in the Americas‚ and Europe developed manufactured goods to aid the production of sugar. All three continents and their exports fit together to form the Trans-Atlantic Trade System. Plantation systems
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Unknown #: 146 Fall-11 Organic Chemistry Midterm Report 13 October 2011 Table of Contents Separation of Benzoic Acid and Acetanilide 3 Extraction and Purification of Caffeine from Tea 4 Extraction of Trimyristin from Nutmeg 5 Conversion of t-butanol to t-butyl chloride 6 Appendix 7 Calculations 8 Literature and Experimental Values of Benzoic Acid and Acetanilide 9 Experimental Caffeine IR 10 Literature Caffeine IR 11 Experimental Trimyristin IR
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phosphoric acid‚ and 1mL of concentrated sulfuric acid was added to a 250 mL round bottom flask and mixed thoroughly with a magnetic stirrer. A simple distillation set up was installed with a 250mL round bottom flask‚ jack‚ stirrer‚ heating mantle‚ and variac. The solution was heated gently with a small heating mantle to distill the crude product while keeping the vapor temperature around 100C or less. The crude product was collected which contained water‚ 4-methylcyclohexene‚ and trace acid. D
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Acid Rain Lab #1 Chem. 1 20 February 2016 Concordia University Texas Angelina Luna angelinaluna97@yahoo.com Chem 1- Sect C Acid Rain Lab #1 Professor Koeck Abstract In this experiment our main objective was to create three gaseous oxides CO₂‚ SO₂ and NO₂ by using data that was collected using a pH sensor which was connected to a laptop with LoggerPro and Vernier. We created the gases by bubbling each gas into the water to create the three acidic solutions we were looking for. Once that
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