ABSTRACT OBJECTIVE To learn the concept of separating organic compounds by utilizing the concept of acid/base chemistry in so that separation can be done. INTRODUCTION Using acid base chemistry in the separation of substances can be a quite useful technique in organic chemistry. A basic extraction can be carried out by applying a hot solvent such as water to a dry substance like coffee. This will allow for the extraction of caffeine and flavor from the coffee beans. Acid base chemistry can be
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Sodium is a metal from group 1 of the periodic table‚ this is a metal which reacts when it needs to‚ this metal has a low melting and boiling point‚ also it is very dense‚ this shows that when reacting with other substances it will be different and this is because it will not react the same the whole time. The other thing is that this elements electron configuration is 11 which is quite low when comparing them to the other elements in the periodic table. However this metal is more reactive than
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Standardisation of a Solution of Sodium Hydroxide: Introduction: In a lot of cases it isn’t possible to prepare a solution by accurate weighing of the solute‚ dissolving in water and diluting to volume. There are many possible reasons for this‚ but in the case of sodium hydroxide‚ the solid absorbs moisture from the air‚ and also reacts with carbon dioxide from the air. In that case‚ it cannot be accurately weighed in air. In an experiment like this‚ a solution of the approximate required concentration
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concentrations. Scientific Background: Vinegar is an acid and there fore can be neutralised by an alkali. Acid + Alkali à salt + water Hydrochloric acid + Sodium Hydroxide à Sodium chloride + water Vinegar is a weak acid and therefore it only partially ionises in solution. CH3COOH ßà CH3COO- + H+ An alkali such as Sodium Hydroxide has a formula NaOH. If the alkali is strong then it ionises fully in solution. NaOH ßà Na+ + OH- When the acid H+ reacts with the alkali OH- the
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Starbucks Coffee Company: An Integrated Marketing Communications Plan April 2006 Prepared for: Starbucks Coffee Company W. H. Evans Prepared by: Sophie van der Vecht Neni Pogarcic Hidde van der Dussen Tim Ensing Dan Mackinnon Lucia Suchankova Table of Contents Executive Summary .................................................................................................................3 Introduction ..................................................................................
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E. Reactions of Aldehydes and Ketones with Sodium Hydroxide Objectives: To know the reactions of aldehydes and ketones with sodium hydroxide a) State the function of Sodium Hydroxide in the test. Sodium hydroxide (NaOH) is the oxidizing agent. b) What are the principles involved in the test? What is its purpose? Cannizzaro reaction is a reaction that uses a strong base‚ such as sodium hydroxide‚ which results to the formation of a carboxylic acid (or its corresponding salt) and an alcohol
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zirconium tetrachlorohydrex gly can cause irritation in sensitive underarm areas. These irritations can cause allergic reactions like contact dermatitis‚ acne‚ or itching. The contact solution I use each morning includes Sodium Borate (Na2[B4O5(OH)4]·8H2O). According to my research‚ Sodium Borate is normally slightly irritating to skin and eyes. When chronic exposure occurs‚ it produce eye irritation‚ cough‚ and skin rash. The hairspray I use each morning includes Aminomethyl Propanol (C4H11NO). At higher
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6 did not. Not many fruits and vegetables contain preservatives simply because they come from nature. One of the items contained Sodium Benzoate‚ a small percentage of people are extremely sensitive to sodium benzoate and can experience asthmatic attacks and other allergic reactions when they take in the preservative. A more normal problem is the combination of sodium benzoate and citric acid and ascorbic acid. When these ingredients mix‚ they form benzene‚ a cancer-causing chemical linked with leukemia
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covalent compound because both hydrogen and iodine are nonmetals. 6) Why would the bulb light up when placed in an aqueous solution of sodium chloride but not in a solid sample of sodium chloride? In a solid sample of sodium chloride‚ sodium and chloride are bonded together ionic and so there aren’t any free electrons to support the flow of electricity. When sodium
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Preparation of Sodium Chloride through titration Abstract: acid-base titration is a technique commonly used to determine the moles of acid in a sample by adding a known volume of strong base of a known concentration. The strong base provides the hydroxide ion‚ to react quantitatively with the acid. The point at which the acid is completely and exactly consumed the known quantity of base is called the equivalence end point and is signalled by a colour change in the solution (end point). This colour
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