[representing saliva]) and Hydrochloric Acid (HCl [representing the stomach’s acid]). The amount of Water and Hydrochloric Acid will be kept constant between tablets‚ and tests. Aim To investigate and compare the rates at which different Aspirin Tablets dissolve. The different kinds of Aspirin tablets are: Enteric Coated Tablets Capsules Regular Tablets Dissolving Tablets. Each tablet will be dissolves in both Water and Hydrochloric Acid (representing saliva and stomach acid respectively). Hypothesis
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Objective: To determine relative molecular mass of a soluble base‚ X2 CO3 by carrying out an acid-base titration with the following reaction ‚ knowing the amount of hydrochloric acid used and the amount of substance Z used. Hypothesis: The X in substance Z is a group 1 element because substance Z is a soluble metal carbonate and would most likely be sodium or potassium because these elements are commonly used. Materials 100 cm3 beaker‚ 250 cm3 beaker‚ 250 cm3 volumetric flask with stopper
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Atwaters Halle Bair May 28‚ 2013 Chemistry 36100 Introduction The purpose of this lab was to produce benzoic acid by mixing sodium benzoate with hydrochloric acid. The Hydrochloric acid used in the experiment was a stock solution made by mixing HCl Acid and deionized water. HCl acid‚ historically called‚ muriatic acid or spirits of salt‚ hydrochloric acid is produced from sulfuric acid and common salt‚ NaCl (Princeton.edu). Since the early 1900 ’s‚ sodium benzoate has been used as a food preservative
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when Sodium Benzoate is acidified to Benzoic Acid. Theory: (2 points) Sodium Benzoate is a common food preservative found in jellies‚ jams‚ sodas‚ fruit juices‚ etc... Its acid‚ Benzoic Acid‚ is an organic preservative that stops the growth of bacteria‚ yeasts‚ and molds. Reaction: (3 points) Reaction: sodium benzoate + hydrochloric acid ( benzoic acid + sodium chloride Amounts: 2.00 g Sodium benzoate‚ 5.0 mL 3M hydrochloric acid
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chemical reaction‚ thus‚ of a chemical change. Materials Crucible tongs Evaporating dish Glass rod Test tubes Test tube rack Thermometer Analytical balance Magnesium ribbon pH paper 1M copper (II) sulfate Iron metal 6M hydrochloric acid Procedure Magnesium and oxygen test A small strip of magnesium metal is held on one end with a pair of crucible tongs‚ while the other end is ignited with the flame of Bunsen burner. The burning ribbon is held over a clean evaporating
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SACKEY IB1B Topic: Acid-Base Titration Aims: 1. To use methyl orange and phenolphthalein as indicators to determine accurately the end of an acid-base titration. 2. To present titration data correctly. Observations: Table of Results Showing The Amount Of 0.12 Mol/dm3 Hydrochloric Acid Required to Neutralise 25cm3 Of Sodium Carbonate of an unknown Concentration Using Methyl Orange Indicator. Pipette Solution | Sodium Carbonate | Mol/dm3 | Burette Solution | Hydrochloric Acid | 0.12Mol/dm3 |
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STEARIC ACID is the saturated fatty acid with an 18-carbon chain and has the IUPAC name octadecanoic acid. It is a white waxy solid. Formula: C18H36O2 Boiling point: 376.1 °C Melting point: 69.6 °C BENZOIC ACID is a colorless crystalline solid and a simple aromatic carboxylic acid. The name is derived from gum benzoin‚ which was for a long time the only source for benzoic acid. Formula: C7H6O2 Boiling point: 249.2 °C Melting point: 120-122 °C SALICYLIC ACID is a monohydroxybenzoic
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Introduction: A balanced chemical equation has reactants and product that has to represent a formulae. The amount of each element‚ number needs to be the same in either side of the equation. (E.g.‚ HCl(aq)+NaHCO3(s) reacts to produce NaCl(aq)+H2O(I)+CO2(g)‚ this is the equation given for this lab). This help us view the study of Law of Conservation of Mass‚ when either side of equation is equally balanced. The calculation for formula mass helps determine if you need to convert grams to a particular
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Determination of the Empirical Formula for Zinc Chloride Objective: To experimentally determine the empirical formula for the product of the reaction between metallic zinc and hydrochloric acid by recovering the product by evaporating it to constant dry mass. Introduction: When zinc metal is reacted with hydrochloric acid‚ hydrogen gas is released and an aqueous solution of zinc chloride is produced. The zinc chloride solution when evaporated to dryness leaves a pure salt product. In order to calculate
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most common type of organic reactions. SN1 reactions can be used to make a wide variety of new compounds. In this experiment‚ t-amyl alcohol will be converted by a SN1 mechanism to 2-chloro-2-methylbutane. Safety Precautions Concentrated Hydrochloric Acid is 12M. It will cause visible destruction of tissue upon contact. Wear eye goggles at all times during this experiment. Keep HCl away from skin‚ clothes‚ eyes. Neutralize any spilled HCl with sodium bicarbonate (baking soda) and wipe up immediately
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