Quality Control for the Athenium Baking Soda Company: OBJECTIVE: Calculate the purity of baking soda produced by the Athenian Baking Soda Company and classify the chemical nature of the impurities present in the baking soda sample. INTRODUCTION: The purpose of the experiment is to find out the pureness of Athenium Baking Soda Company's baking soda and recognize the impurities present in the baking soda sample. Baking soda is the common name for sodium hydrogen carbonate or sodium bicarbonate, NaHCO3. It is a safer and more environmentally friendly alternative to commonly-used products because it is an economical, natural compound. It can be found in many products such as toothpaste, heavy-duty dish cleanser, hand and face wash, fire extinguisher, household cleanser, deodorizer, for cooking, and for acid indigestion.
1) In addition to sodium chloride, brine often contains potassium chloride, lithium chloride, and calcium chloride (i.e., KCl, LiCl, and CaCl2, respectively). Consequently, these compounds may be present in (and thus contaminate) the desired solid product – i.e., baking soda (NaHCO3) – when it is dried and filtered. In order to determine the composition and purity of the baking soda produced by ABSC, Team AMEE will utilize the following experimental techniques. First, using thermal gravimetric analysis, Team AMEE will determine the percent by mass of sodium bicarbonate in a
Chemistry 11 | The Decomposition Reaction of Baking Soda, NaHCO3 | Oscar ShiPeriod 2Laboratory AssignmentDue Date: 2011/4/14 | Introduction The objective of this experiment is to find the actual chemical equation that governs the manner in which baking soda (sodium hydrogen carbonate NaHCO3) decomposes. When NaHCO3 is heated, it decomposes to produce a gas and leaves behind a solid. Two possible equations for the decomposition are: NaHCO3 (s) + heat NaOH (s) + CO2 (g) NaHCO3 (s) + heat ½ Na2OH3 (s) + ½ H2O (g) + ½ CO2 (g) Materials and Methods * electronic balance * sodium hydrogen carbonate * ring * ring stand * crucible tongs * crucible * crucible lid * clay triangles The Procedure of the Laboratory 1. Put on safety goggles and a lab apron. 2.
Is There a Change in Temperature when an Alkali Neutralizes an Acid? Aim The aim of the experiment was to find out if there was a change in temperature when we added an alkali (Sodium Hydroxide) to an acid (Hydrochloric Acid) to neutralize it. Hypothesis We hypothesized that there was going be a raise in temperature as we add 1ml of Sodium Hydroxide at a time to the Hydrochloric Acid due to the neutralization of the acid. The neutralization is chemical reaction that causes an exothermic reaction. Sodium Hydroxide + Hydrochloric Acid Sodium Chloride + Water NaOH(aq) + HClaq → NaCl(aq) + H2O(l) Variables Independent The independent variable of the experiment was the amount of sodium hydroxide that we added to the acid.
Baking Soda Quality Control Experiment Date 01/19/2014 Introduction The Athenum Baking Soda Company has recently decided to start producing baking soda from one of several methods; although, the process which they have chosen could lead to impurities within the product. Our group has been given the opportunity to provide quality control for the Athenum Baking Soda Company and insure they will have the best product for market. Athenum has chosen to react crystalline ammonium hydrogen carbonate with a brine to separate the ions in solution; this process is shown by this chemical reaction NH4HCO3 (s) + NaCl(aq) = NaHCO3(aq) + NH4Cl(aq). The brine solution is highly concentrated with a sodium chloride, though it is known to contain impurities such as calcium chloride, lithium chloride, and potassium chloride. There are several options in which quality control can be insured; however our group has elected to utilize emissions analysis, thermal gravimetric analysis, and a titration to determine the purity of NaHCO3 and what impurities, if any, exist.
In school, you probably tried an experiment where you mixed baking soda with vinegar to see it foam. That's what is happening in baking powder. If you look at the ingredients for Alka-Seltzer, you will find that it contains citric acid and sodium bicarbonate (baking soda). When you drop the tablet in water, the acid and the baking soda react -- this produces the fizz. You can think of an Alka-Seltzer tablet as compressed baking powder with a little aspirin mixed in.
In the nitration of benzoic acid, the mixture of HNO3 plus H2SO4 and benzoic acid dissolved in H2SO4 was combined. Combining HNO3 and H2SO4 is an acid-base reaction which will be shown in the reactions to be shown. During the dissolution of benzoic acid solids, some unexpected reactions visibly occurred. White slimy and sticky ppts start to form which was unexpected from the reaction mixture. Both mixtures are placed in an ice bath and when it was combined, the temperature of 0-10C was maintained.
Experiment 9 – Decomposition of Baking Soda Introduction The decomposition of any metal hydrogen carbonate will result in the formation of that metal carbonate, water vapor, and carbon dioxide. This lab will investigate the decomposition of sodium hydrogen carbonate, NaHCO3, commonly called baking soda. It is governed by the following chemical equation: 2 NaHCO3sNa2CO3s+ H2O g+ CO2 (g) In this lab, the NaHCO3 will be decomposed to form Na2CO3. The first half of the experiment will use a pure sample of NaHCO3, and the second part will use a mixture containing only some NaHCO3. Depending on how well the first half of the experiment is performed, the percent yield of this reaction should be 100%.
Do not open lid too far. 9.Obtain a 10-mL transfer pipet and a 50-mL buret. 10.Next obtain the 2g of baking soda and place in a beaker. The Na2CO3 solution must be kept in a clean and dry Erlenmeyer flask that is closed because solution will react with water. Doing the Titration 1.Mix 2g of
Then, sodium hydroxide would have to be titrated against the potassium hydrogen phthalate to standardize sodium hydroxide to 0.1M as well. Titration is the procedure used to determine the concentration of some substance by the controlled addition of a solution into a reaction vessel (flask) from a burette. By using titration, the volume of the solution delivered from the burette may be determined very precisely. This reliable primary standard solution became useful as a titration was made against the orange juice to find the molarity of the citric acid. The indicator Phenolphthalein was the substance used to signal when the titration reached the point at which the reactants are stoichiometrically equal as defined by the balance reaction equation.