Introduction The method utilized in this study involves the bomb calorimetry, which is an analysis method that is widely used in chemistry to determine the energy of combustion of a sample. The instrument used is a calorimeter, a device which measures gross heat, which is the energy of combustion and enthalpy of formation of the hydrocarbon combusted. The sample in this particular experiment involves used cooking oil, a biodiesel, which is compared against a conventional diesel. According to a publication […]
Concentration of Nitrate Ions and Chlorine Ions in Wastewater By: Jenny Mathe Abstract: An experiment was conducted in order to test the concentration of ions in wastewater that is being deposited into Lake Onondaga. Ions, such as NO3– and Cl– can pollute the water by stimulating algal growth and remove phosphate from the water, respectively. The experiment consisted of testing the both the nitrate and chloride ion through spectrometry and titration in order to determine the concentration of the ion […]
Esterification of Benzocaine By: Nick Makowski and Monica Schaeffer Purpose: To practice the techniques of refluxing and vacuum filtration to perform an esterification reaction to create benzocaine from p-aminobenzoic acid Chemical Structures/Reactions/Mechanisms: Results: Physical Appearances- After ethanol and sulfuric acid added to p-aminobenzoic acid, solution became clumpy and then turned into a white foam After refluxing, solution became more solid Upon filtration, white benzocaine crystals formed Mass of Substances- p-aminobenzoic acid: 1.201g benzocaine: 0.368g Na2CO3: 11mL Melting Point- Known= 88-90 […]
By: Alexander Jones Author Note: Alexander M. Jones, Department of Environmental and Plant Biology, Ohio University. This research was supported by the desire to assist in the education about ethnobotanicals as well as the importance and efficacy of modest homemade medicines from flora found in the field. Any correspondence or inquiries regarding this article and the information presented herein can be directed to Alexander Jones, Department of Environmental and Plant Biology, Ohio University, Athens, Ohio 45701. Contact: [email protected] Abstract: […]
By: Kirill Polyanskiy Introduction The purpose of this experiment is to test the accuracy and precision of the person doing the experiment as well as find the density of a metal rod. The accuracy and precision with which one performs experiments is a very important factor in their success as a scientist. In this laboratory, the accuracy and precision of my own laboratory techniques was tested by finding the mass, volume, and eventually density of a brass rod and comparing […]
Determination of Chloride in an Unknown Salt By Diane Krehbiel Abstract: In this experiment, the chloride content of an unknown salt will be determined using two different methods. The first method used will be the Fajan titrimetric method which uses an adsorption indicator. The second method will use gravimetric analysis to determine chloride content. The results from both methods were very similar have average mass percent’s of 28.34% and 26.79%. This seems to indicate that the content in chloride found […]
