TITLE : * Analysis of an unknown acetic acid solution OBJECTIVES : * To prepare the sodium hydroxide solution‚ NaOH * To standardise the base against potassium hydrogen phthalate * To analyse the unknown acetic acid RESULTS : A. Preparation of the sodium hydroxide solution Volume of NaOH taken from the stock solution = 3.33 mL B. Standardisation of the base against potassium hydrogen phthalate | 1 | 2 | 3 | Weight KHP | 1.0000 | 1.0004 | 1.0006 | Final volume
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Lay Public (FINAL draft) Benefits of Omega 3 Fatty Acids In the rush to cut calories‚ reduce cholesterol intake‚ and avoid saturated fats‚ many of us have embraced low-fat diets and low-fat foods. But some fats are necessary and "essential" for health. These fats show great promise for fighting the onslaught of heart disease and diabetes‚ possibly even cancer. What are these "good" fats—and how do we get enough of them? The benefits of Omega 3 fats have been researched for quite some time and
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The Cause and Effects of Acid Mine Drainage INTRODUCTION Imagine going fishing on a cool Autumn day‚ the trees are all different shades of orange‚ brown and red and the birds are singing their beautiful songs‚ but their is a serious problem because when you arrive at the river all plant and animal life are gone. This is by no means a recent phenomenon. This is due to the effects of acid rock drainage (ARD). This is a problem that has been occurring since ancient times‚ but it was not until
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Fermented food‚ enjoyed across the globe‚ conveys health benefits through lactic acid fermentation. The fermentation process can transform the flavor of food from the plain and mundane to a mouth-puckering sourness enlivened by colonies of beneficial bacteria and enhanced micronutrients. While fermented food like yogurt‚ sauerkraut and kefir are well-known many other lesser-known foods also benefit from the lactic acid fermentation process. Indeed‚ virtually every food with a complex or simple sugar
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Abstract Acid Rain has a lot of effects on living organisms and on the environment. This experiment has two purposes. One is to determine the acidity of rainwater in certain areas in the Philippines. Another purpose is to determine which type of area-urban or rural- is more subjected to acid rain. The experiment was done by first collecting rainwater from selected rural and urban areas. After the collection was done‚ the rainwater samples were tested using a pH meter. The results of the pH test
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Chemistry Internal Assessment Title: Determination of the percentage (%) of ethanoic acid in vinegar Date Experiment was performed: 1st April 2011 Criteria Assessed: DCP‚ CE Apparatus: 2 conical flasks 1 250cm3 volumetric flask ±0.30cm3 Electronic Balance ±0.10g 50cm3 Burette±0.1cm3 25cm3 Pipette±0.06cm3 Materials: 0.20M HCl (±0.02moldm-3) 1.1g solid NaOH (±0.1g) A solution of vinegar of unknown concentration (density= 1.05gcm-3) Phenolphthalein Method: * A solution of NaOH was
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Experiment 2: Centrifugation Title Centrifugation of fresh milk and Acetic Acid Objective(s): 1. To separate coagulated milk from mixture of fresh milk and Acetic Acid by centrifugation 2. To determine the relationship of speed of centrifugation with the coagulation of milk which separate from mixture. 3. To study the process of centrifugation Introduction Centrifugation is a process which materials suspended in a liquid medium undergo separation or concentrate due to the effect of gravity
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By: Jayquan S Salmond Out of all the amino acids‚ 8 are classified as essential amino acids. The body finds it hard to combine them with other compounds at a normal level to assist in adequate growth. The 8 are known as phenylalanine‚ valine‚ threonine‚ tryptophan‚ isoleucine‚ methionine‚ leucine‚ and lysine. When the isoleucine‚ leucine‚ and valine are grouped they are called BCAA or branched-chain amino acids. 1/3 of the body’s skeletal muscles are made up of BCAA. Skeletal muscles are
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Synthesis of Ethyl Salicylate from Salicylic Acid ____________________________________________________________ _______________ Purpose: Salicylic acid is converted to the liquid ethyl salicylate by addition of ethanol. Yields of salicylic acid (week 1) and ethyl salicylate will be found‚ as well as the overall yield of the 2-step conversion of acetyl salicylic acid to ethyl salicylate. Introduction: Esters are formed from the reaction of acids and alcohols: O O
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Hydrocinnamic acid underwent bromination using N-bromosuccinimide and AIBN. As one lab partner set up the reflux apparatus‚ the other measured the chemicals used in the lab experiment. 2.10 g of hydrocinnamic acid was used. It was observed as white and had a slight cinnamon smell. The amount of NBS was 2.49g and was measured in the fume hood. AIBN was measured at .030 g. 10 mL of acetic acid was also obtained. The reflux apparatus consisted of a 25 mL flask with a stir bar in a water bath. The chemicals
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