By: Jane Huang, Stephanie Thomas and Vasthi Yanes Chemical Reaction Equation Reaction Table Introduction The purpose of this lab is to perform a reduction of trans-cinnamaldehyde. This process consists of 1) mixing trans-cinnamaldehyde with sodium borohydride and methanol, 2) employing rota-vap and the rinsing and removal of aqueous layers to purify mixture, 3) drying the precipitate via gravity filtration. The use of metal hydrides, such as sodium borohydride and lithium aluminum hydride, is the most commonly used out of […]
Introduction: Lab group three was asked to calibrate the rotameter and orifice meter. It was also requested of us to measure the range of Reynolds numbers able to be read in the CM3215 laboratory. The orifice meter is a section of pipe with a restriction that acts to create a pressure drop. As the fluid approaches the orifice, the pressure increases and then suddenly drops as a result of the velocity increase through the reduced cross sectional area. A rotameter […]
By: Vanessa Staats Introduction All pH vs. volume of NaOH graphs for each trial appeared as they should have and were used to determine equivalence points. The most clearly defined equivalence points were the second one for all three trials. Molecular weight was calculated, using only trials two and three, and unknown 2 was determined to be maleic acid. Trial one was thrown out when calculating the average molecular weight because the amount of NaOH in liters was vastly different than […]
By: Nathan Gaffney Introduction/Purpose The purpose of this lab was to learn about the oxidation of alcohols. The starting compound was 2-Ethyl-1,3-Hexanediol, one of the hydroxyl groups was first degree while the other was second degree. The reagent used was calcium hypochlorite. Since the starting material was a diol the product outcome could have been a variety of products. That is why the results of the lab were investigated via IR to determine if the reagent calcium hypochlorite was a strong […]
By: Ashley Martin Introduction This experiment explored the concepts of thermodynamic and kinetic products and controlling the formation of each product of the reaction of semicarbazide hydrochloride and cyclohexanone as well as semicarbazide hydrochloride and 2-furaldehyde. The kinetic product is formed under conditions where reactions that require a lot of energy are irreversible or in which there is no equilibrium achieved. The amount of product is determined by their rates of formation, which correlates to the height of the transition […]
By: Victoria Anatsui Introduction: The purpose of this lab is to learn the important separation methods of distillation/fractional distillation. These methods separate miscible liquids by utilizing their differences in boiling point. Simple distillation is great for separating liquids with very large differences in boiling points while fractional distillation is better at separating liquids with closer boiling points. Procedure: We set up both a simple and fractional distillation apparatus with 60ml of a methanol/water mixture (Unknown Bottle C) in a 100ml […]