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
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.
As the reaction progresses, less starch is present and more sugars are being made, therefore the bread begins to taste sweet. The enzyme used in this lab exercise is amylase, which is commonly found in saliva and germinating seeds. It catalyzes the breakdown of starch. When amylase reacts with starch, it cuts off the disaccharide maltose (two glucose molecules linked together). As the reaction progresses, less starch will be present and more sugar (maltose) will be present Saliva contains the enzyme salivary amylase.
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.
McGraw-Hill companies, Inc.) Although sulfuric acid served as the acid in the reaction, it is also the catalyst in the over-all reaction. Water, attached to N, is good leaving group so it is eliminated to form the nitronium ion. The ppt was further recrystallized and purified. It was first dissolved in hot dH2O and then hot gravity filtration was performed. Many insoluble substances were isolated and cream in color.
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.
They must find the percent by mass of NaHCO3 in their baking soda product and detect if there are other salts (Ca, K, Li) present. The team with the most efficient techniques and accurate results will be crowned quality control scientists. There are two ways to determine the percent composition of NaHCO3 in the baking soda sample: Thermal Gravimetric Analysis (p.43) and Titration (p.57). Thermal gravimetric analysis is the process of introducing heat to the mixture in order to find the percent composition of it’s components. When heat is introduced, NaHCO3 will decompose into Na2CO3 (s) , CO2 (g), and H2O (l): 2 NaHCO3 (s) + heat → Na2CO3(s) + CO2 (g) + H2O(l) CO2 and H2O will be liberated from the baking soda sample and we will be left with Na2CO3 solid (assuming there are no contaminants).
balsamic vinegar, apple vinegar, brown vinegar and white vinegar. Baking soda is loaded with sodium bicarbonate crystals which is created by dissolving the soda ash
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.
With iodine it changes to a brown color and becomes clumpy. Using the mystery powder key, experimental results were compared to know results of baking soda,baking powder,cornstarch and powdered sugar. Chemical changes were made when a substance fizzes up or changes color. When a substance fizzed up into bubbles, it indicated a reactivity of solubility and a chemical change. Physical changes were indicated when a substance only reacted once.