PH meter

The electrochemical properties of the squaraine dyes (SQ1 & SQ2) were investigated. The effects of the chemical structures of two SQ1&SQ2 dyes were selected in relation to the variable property of -COOH substituent for SQ1 compare to SQ2 which without substituent and determine their potential energy levels in ground and excited states HOMO and LUMO. The HOMO energy levels of the SQ1 & SQ2 dyes are -5.19 eV and -5.16 eV. The LUMO energy levels are calculated to be -3.08 eV and -3.1eV respectively…

3.1 Cure characteristics of CIIR with accelerated sulphur The cure characteristics of CIIR with an efficient type of accelerated sulphur (EV) system at different vulcanization temperatures are depicted in Figure 2 and Table 2 respectively. The EV system used here particularly to reduce the set properties at elevated temperature as it possesses relatively less polysulfidic linkages as compared to the conventional sulphur vulcanization (CV) system. It can be seen from the figure that the…

This experiment was conducted to practice a variety of techniques in organic chemistry: separation, mechanisms, acid-base reactions, evaporation, recrystallization, and identification. The goal of this experiment was to identify the unknown mixture of two compounds. The two compounds were separated first by altering the acid components solubility through deprotonation, and then protonating the acid component again to form the separated precipitate. The ether in the neutral layer was evaporated,…

was to create a clear aqueous fertilizer that had a pH range of 6.0-7.0 with first three solid compounds the first day and then four solid compounds the second day. To complete this experiment, make calculations to find how much of each compound is needed in grams, use an analytical balance to measure out compounds accurately, mix the compounds in DI water until they are dissolved, test pH levels, effectively add acids or bases depending on pH level, and administrate EDTA when a precipitate has…

and 0.1 mL of the enzyme. Each was sat for twenty minutes checking every five minutes for a color change. The only different in this experiment is that one test tube sat in an ice bucket and the other test tube sat in a beaker on a hot plate. For the pH optimum experiment, my partner Gabby and I choose to do two test tube of one having 1.4mL of the very basic, Boric acid, and the other having 1.4mL of the very acid, 5 NHCl. Both test tubes had 0.5 mL of the substrate and 0.1 mL of the enzyme.…

the second part of the project, which was to quantitatively analyze the impacts of glucose on the dissolution of these metal ions. The scope of this project could only focus on the effect of one variable; whether in fact, many other variables such as pH, salinity, and phosphate ions could also affect the dissociation of NMC particles. However, by focusing on one variable at time, a more general hypothesis could be drawn and utilized in the treatment of waste batteries. Background information on…

Benedict’s reagent detected any broken-down glucose. The same procedures were then performed waiting 5, 10, and 15 minutes before deactivating the amylase. Then again repeating the procedures with 4°C and 95°C water baths. Five test tubes were filled with pH buffers ranging from 2 to 10 in each tube before 2 mL of starch solution was added and the tubes were left to incubate at 37°C for 5 minutes. 500 μL of enzyme was added to each tube, then immediately quenched by adding 2 mL of 1 M…

CHAPTER I INTRODUCTION 1.1 BACKGROUND STUDY Wastewater in the textile , plastic, paper and cosmetics industry is a major threat to the environment. The volume of wastewater produced starts from different processes throughout from the pretreatments to the final treatment. The contents found in the wastewater are complex, having inorganic and organic compound chemicals in it and aquatic lives are at risk. Some of these wastes have even caused mutation in genetic coding of the marine…

Ferhan Abdullah Thursday, 09 November 2016 Experiment 7 The Separation of Three Organic Compounds by Acid-Base Reactions and Liquid-Liquid Extractions Abstract: The purpose of the experiment was to isolate the three mixtures 9-fluorenone , benzoic acid and benzocaine by the liquid-liquid extraction method and the acid-base reaction technique. Using the acid-base reaction technique, the acid and base are neutralized, producing salt and water. By using the liquid-liquid extraction method, two…

murders, they had enough evidence. Although Haigh had confessed, he pleaded insanity with the hopes of only being put in a mental hospital for a few months and being released. This plea failed, and he was charged with murder. Acidic chemicals have a pH ranging from 0-7. These acids usually have a very sour taste to it. The term “acid”is derived from the latin term acere, which means sour. (properties of acids and bases) Acids are tested with litmus paper, and turn it red, and destroy the…