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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Title: ACID BASE TITRATION. Objectives: 1. To determine the concentration of acid using titration. 2. Skills of titration techniques. Apparatus: 1. 250 volumetric flask 2. 10mL measuring cylinder 3. 25mL pipette 4. 50mL burette 5. 250mL beaker 6. 150mL conical flask 7. Retord stand 8. White tile 9. Stopwatch 10. Pipette bulb Chemicals: 1. HCl solution 2. 0.1M NaOH solution 3. H2SO4 solution 4. Distilled water 5. phenolphthalein
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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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I. Introduction The purpose of this experiment is to determine the pH values of acids‚ bases‚ and buffers of distilled water and 10.0 buffer using measured concentrations of Sodium hydroxide (NaOH) and/or Hydrochloric acid (HCl). Acid is a compound typically having a bitter taste and capable of nullifying alkalis and releases hydrogen ion when added to a solution‚ or containing an atom that can accept a pair of electrons from a base (McKinley‚ Dean O’Loughlin‚ & Stouter Bidle‚ 2016). Bases are water-soluble
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The conventional method was conducted by placing 2.0641 grams of salicylic acid in a dry 125 mL Erlenmeyer flask. In a fume hood‚ 4 mL of acetic anhydride and 5 drops of concentrated sulfuric acid were added to the flask. The contents were swirled in the flask and then heated for 20 minutes in a hot water bath. After the 20 minutes were up‚ 10 mL of cold water were added in 1 mL increments. The flask was cooled for 10 minutes and occasionally stirred. The crystals that formed were collected via filtration
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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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is not in the normal blood pH‚ the person can fall sick and it might be harm to the person. The maintenance of blood pH is called acid-base homeostasis. Acid-base homeostasis is a complex synergy that involving lungs‚ kidneys and a buffer chemical in blood and blood cells. BACKGROUND A substance that has high concentration of hydrogen ion in solution is called acid and solution that has low concentration of hydrogen ion is base. Base
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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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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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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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