Economic Indicators Essay

Firstly the shortcut simulation of BTX separation was conducted. The first shortcut column that receives the feed is representative of the prefractionator, which is the left side of the dividing wall. Therefore this first column is meant to do sloppy splits of the feed. In this case, the prefractionator is expected to do a sharp split of Benzene and p-Xylene and a sloppy split of Toluene. For the prefractionator (SRCT-1), the heavy key will be p-Xylene and light key will be Benzene. This is because

Experiment two of lab was to identify substances by their physical properties and evaluate these properties to become better acquainted with given substances. Focal point of lab was to distinguish and discover the unknow solid substance used in experiment among other chemicals such as ethyl alcohol toluene cycloheptane and naphthalene. Odors, solubility, color, and texture are key factors to help examine and observe substances and to identify them. There are some physical properties that can be found

For lab eight, the molarity of the NaOH solution is 0.07823 M. For lab nine, the molarity of the NaOH solution is 0.4224 M. The molarity of the NaOH solution for both lab eight and nine was not accurate because the solution did not turn the color to pink. Some source of error in this lab is oxalic acid is not completely moved from the plastic lab tray to the beaker. There is a small amount of substance left in the plastic lab tray that cause the mass of the beaker with NaOH solution to have less

Acids and Bases As a kid I always loved to mix different liquids together to see what would happen. Present day, it is a joy to experiment with liquids while I am learning about chemistry. Today, I will use litmus paper to determine the acidity of different foods, test the pH of tap water, and analyze what happens when baking soda, liquid soap and vinegar are mixed together. Follow along as I describe in this paper what happened in my experiments. To begin with, I used blue litmus

Bromothymol Blue Preparation 1: Added 2 mL of 5.33 x 10-5 M bromothymol blue solution into two separate test tubes using a pipette. In one, added 1 mL of pH 10.00 buffer and in the second, added 1 mL of pH 5.00 buffer. Spectrophotomer Set-Up: Applied the correct settings to UVmini-1240 UV-Vis Spectrophotometer. Filled a cuvette with a path length of 1 cm, with distilled water and placed the blank into the cell holder of the device. Calibrated and corrected parameters. Disposed of water and added

This instrument provided a direct measure of the carbon monoxide in parts per million (CO ppm). The MINI is a short structured diagnostic interview for researchers to accurately determine the presence of any psychiatric disorders according to DSM-IV or ICD-10 [31, 32]. It was administered in either English or in the Malay language, according to the patient’s preference and main spoken language. Previous research has shown that 39.4% of smokers failed to meet the DSM-IV-TR criteria for nicotine dependence

Name: Amra Aliyu Lab partner: Jamie Liang Lab: pH At The UN Course: Chem 106 Date: 7/11/2015 INTRODUCTION pH is a scale that is used to determine the acidity or alkalinity of a solution. A solution with a pH less than 7 is considered acidic and a solution with a pH of more than 7 is considered basic. In the first part of this lab we had to make several solutions and using a litmus paper deduce it’s pH number, this is done by analyzing its color, and determine if the solution is acidic

Question: The equivalence points of the two titration curves were not in the same pH range. Explain. (Why was the pH at the equivalence point different for the two different acids?) • HCl + NaOH → NaCl + H2O While both NaCl and H2O are neutral, then pH = 7 • HC2H3O2 + NaOH → NaC2H3O2 + H2O While H2O is neutral but NaC2H3O2 is basic, then pH > 7 Problem & error: Write a paragraph about the issues you had in performing this lab. What went well, what did not go so well? What could you have done

The use of an appropriate indicator is vital in performing a successful titration reaction because the end point and equivalence point must be as close as possible. The indicator phenolphthalein was chosen for both parts B and C as in both titrations it was a weak-acid and strong base titration. Oxalic acid and acetic acid are both weak acids, whereas

and neutralized each other. Neutralization between a strong acid and base such as HCl and NaOH will result in a solution with a pH of 7.0. If the final solution does not have a pH of 7.0 errors that might have occurred include misjudging of color indicator, using a contaminated