Chemical process

Number: 13335535 Lab Partner’s Name: Ifeoma Agu Demonstrator: Maria Inorganic Chemistry Experiment 3: The Identification of Unknown Samples Objectives The experiments were carried out in order to identify 15 samples, through their physical and chemical properties. Theory A precipitation reaction is one which produces an insoluble salt as product. An example would be; Ca(NO3)2 + H2SO4 = CaSO4 + 2HNO3 The calcium salt is insoluble. Precipitation reactions could be used in this experiment to…

The purpose of this experiment was to learn techniques to determine the freezing point of a pure benzophenone, a solvent. Furthermore, methods for determining the freezing point depression in relation to the solute, cyclohexanone, concentration were employed in addition to learning what molality is and how it related to the colligative properties being studied. These objectives were achieved by melting both pure benzophenone and benzophenone/cyclohexanone solutions (two solutions with…

[Chemical Engineering Lab Practice 4] EXTRACTION OF BENZOIC ACID Candidate’s Name: Raajeswari A/P Radahakrishnan Student ID: SCM-023562 Group Member’s Name: Angela A/P Gunasegaran Shubashinee A/P Murugan Lecturer/ Supervisor: Ms Nazlina & Dr Ong Chi Siang Date of Submission: 13 October 2015 1.0 ABSTRACT This experiment is about extraction of benzoic acid from kerosene by water droplets that was conducted on 6 October 2015 with few group of students. The main purpose of…

equations helps us mathematically see what is happing during the reaction besides performing and watching it occur. Being able to identify the limiting reagent, products produce, and solve for molarity is key to chemical analysis. Performing the experiment is just half of the equation in chemical analysis. This lab did not have many safety precautions except there was an open flame…

information in our nerves and is involved in processing this information in our brains. Moreover, the valence electrons are responsible for binding atoms to form molecules. The structural change of molecule is triggered by motion of electrons in the chemical bonds. Controlling this fast electron motion, in turn, allows to control the molecular structure change. Additionally, the ability to take snapshots of the electron motion dynamics will improve our…

Abstract The purpose of this investigation is to determine whether the temperature can affect the reaction rate of enzyme activity. The enzyme activity was measured by five different temperatures, separated in tubes which later got measured by their height of foam after 10 minutes. Freshly-prepared potato juice was used as the enzyme for catalase. Since temperature is measured by the kinetic energy of molecules, the higher the temperature, the more movement of molecules. The lowest temperature…

The Kinetic Molecular Theory explains why gases behave the way they do. It explains how gas particles are in constant motion and create collisions that results in pressure. The theory is split up into four different postulates. Number one explains how gases are made up of tiny particles. To prove that those particles take up space, postulate #2 tells us that the particles collide with each other and those collisions make pressure. Pressure can either expand or shrink a flexible container,…

The purpose of this experiment was to determine the presence of the analgesic compounds acetaminophen, aspirin, caffeine, and salicylamide in the over-the-counter medications Anacin, Bufferin, Excedrin, and Tylenol. Thin-layer chromatography (TLC) was used to analyze solutions of the medications; the TLC plates were visualized using ultraviolet light and iodine staining.The ten micropipets used to spot the TLC plates were made from glass capillary tubes by heating the middle of each tube in a…

glance at our periodic table identified the metal as sodium. The low percent error of 0.377% is indicative of the accuracy of this experiment. Possible sources of error include the unknown carbonate absorbing water during the heating and cooling process. There also may have been human error when the solid contents when transferred to the filter paper because perhaps not all of the contents were completely transferred. In addition, the measurements of how much liquid was poured into the beaker…

diluted into the water the heavier the diffused gummy bear would be, therefore we measure weight as our numerical data. My hypothesis was that the 10g dilution of salt would have the gummy bear with the largest mass. This was because diffusion is the process where the molecules of both substances interact, with a constant kinetic energy. Therefore because the salt would increase the mass of the water, it would in result also increase the mass of the gummy bear because of the kinetic energy…