Purpose: The purpose of this experiment is to determine the quantities of the impurities of the baking soda produced by the Athenium Baking Soda Company and also identify the salts present in the baking soda sample. Introduction: NaHCO3, sodium bicarbonate or even sodium hydrogen carbonate, are many different names for a common item, baking soda. Baking soda are has many different uses, most of them involving cleaning household items. It does have other uses such as a hygiene product. There are several different ways to create baking soda, but the Athenium Baking Soda Company chose to make baking soda by reacting ammonium hydrogen carbonate with a highly concentrated aqueous solution of NaCl or brine.
Quality Control for the Athenium Baking Soda Company A Self-Directed Experiment 16 April 2012 INTRODUCTION The Athenium Baking Soda Company has begun producing baking soda (sodium bicarbonate, or sodium hydrogen carbonate). NH4HCO3 + NaCl ==> NaHCO3 + NH4Cl Due to the high concentration of the brine solution that is used to generate the product, contaminants are often present in the finished product as chloride compounds. The contaminants may be detected when the finished baking soda product is dried and filtered. PURPOSE: In this experiment, we will be employing quality control by analyzing the composition and purity of the contaminated baking soda samples. To perform this experiment, we will utilize emission spectra, titrations, and thermal gravimetric analysis, using knowledge from Experiments 10, 4, Titrations of Na2CO3 and NAHCO3 by HCl (hydrochloric acid) will be performed to determine the concentration of HCl, as well as the number of moles of HCl present within the sample of baking soda.
For example, when baker’s make dough for bread, they use yeast to make the dough rise and become bigger, fluffier and softer. If the baker would have just made the dough without yeast, the bread would be much harder and flat. Next, baking soda and baking powder are similar and can be substituted for each other. These two leavening agents are very important in a lot of baking. Baking soda has an acid content that reacts with any of the acids in the recipe and produces carbon dioxide.
You can think of an Alka-Seltzer tablet as compressed baking powder with a little aspirin mixed in. Materials: |3 Clear glasses |6 Alka-Seltzer tablets |Mortar and pestle | |Stopwatch | | | Hypothesis: I think _____________________________________________________ Because______________________________________________________ Identify the variables:
Samantha Monette Lab Section E Wednesday 10:00-12:50 p.m. Bromination/Debromination of Cholesterol Abstract: The purpose of this experiment was to purify commercial cholesterol. The commercial cholesterol was brominated using bromine as the reagent. After the compound was cooled and vacuum filtrated, dibromocholesterol was obtained. To purify the dibromocholesterol, zinc was added as the reagent. After a series of washes to remove any impurities, the compound was dried and decanted, cholesterol was synthesized.
The familiar volcano experiment that we all know, mixing baking soda and vinegar, is used to create a bubbly reaction. In the lab, two substances are mixed and create sodium acetate, carbon dioxide, and water (CH3COOH). The purpose of the lab was to predict how much product was made from the chemical reaction, using stoichiometry. If there is a certain amount of baking soda, mixed with 50 mL of vinegar, then the percent yield will be able to be predicted. The percent yield gained was calculated from the amount that was recovered from the experiment.
The Active dried yeast is a type of original all-natural yeast that has been used by generations of bread bakers. The yeast activity may decrease if it comes into direct contact with salt or sugar. When all ingredients are mixed together, the yeast will converts simple sugars into carbon dioxide, alcohol and water. The CO2 expands in the dough to produce gaseous bubbles. All these bubbles cause the bread to rise.
NaHCO3 (sodium bicarbonate - baking soda) and HCl (hydrochloric acid). The bubbles formed are carbon dioxide. HCl (hydrochloric acid) and BTB (bromothymol blue). Bromothymol blue is one of many acid-base indicators. What color do you observe?
Determination of the percentage purity of aspirin Introduction The aim of this experiment is to determine the percentage purity of 2-ethanoyl-hydrobenzoic acid (acetylsalicylic acid) in aspirin tablets. A known amount of standard sodium hydroxide solution is used in excess to hydrolyze a known mass of aspirin tablets: CH3COOC6H4COOH(s) + NaOH(aq) → C9H7O4Na(s) + H2O(l) The unused sodium hydroxide which remains is then titrated with standard nitric acid solution of 1 mol. NaOH(aq) + HCl(aq) → NaNO3(s) + H2O(l) The amount of alkali required for the hydrolysis can now be calculated and from the above equation, the amount of moles of acetylsalicylic acid which has been hydrolyzed can be found. Research question | Independent variablesnumber
“Analyzing and Synthesizing Potassium Aluminum Sulfate” Introduction: Potassium aluminum sulfate, also known as Alum, is a salt found in many commercially made products. Alum is an ingredient in commercially made baking powder, and gives baking powder the faint metallic taste. Alum is also used in the production of cucumbers, pickles, and maraschino cherries. The aluminum ions give the fruit a crisp taste because it strengthens the cell walls (2). Potassium aluminum sulfate is also used in some commercially produced and sold deodorants (3).