November 4, 2009
2 INTRODUCTION cook soda, overly known as sodium hydrogen atomic number 6ate, NaHCO3, is a leafy vegetable compound that we not only encounter everyday, but is profitable in many aspects of life. Its uses vary from acting as a fruit cleaning or even as a fire extinguishing. In producing it, the Athenium Baking Soda Company decided to utilize the following reaction of ammonium hydrogen carbonate and a brine, sodium chloride: NH4HCO3(s) + NaCl(aq) ? NaHCO3(aq) + NH4Cl The brine, though mostly consisting of sodium chloride, also contains trace amounts of potassium chloride, lithium chloride, and calcium chloride. Thus, when the aqueous baking soda is dried to form the desired, solid product, there is a possibility that the presence of the latter lead compounds may be found. In order to ensure quality control for the Athenium Baking Soda Companys product, we exit select three methods of experimentation to determine the purity of its baking soda, as puff up as its composition. The first experimental procedure to take displace will be a thermal gravimetric analysis, which will help determine the per centum composition of sodium bicarbonate of a smack of the companys baking soda.
In this experiment, a known mickle of a sample of the companys baking soda will be added to a crucible and heated until it decomposes into solid sodium carbonate, gaseous carbon dioxide, and gaseous water, as shown in the following equation: 2NaHCO3(s) ? Na2CO3(s) + CO2(g) + H2O(g) by and by a reheating of the crucible to ensure accuracy, the stoichiometric ratio for the mass loss of CO2 and H2O per gram of NaHCO3 will be determined, along with the total mass of CO2 and H2O disoriented upon heating. These will be used in order to determine
3 the mass of NaHCO3 present in the sample. Finally, using the collected data, the percent by mass of NaHCO3 in the companys sample will be calculated so that it may be used as an indicator of whether or not former(a) contaminants...If you want to get a full essay, order it on our website: Ordercustompaper.com
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