there were two very strong acids, one of them didn’t show any visible reaction which is #65, so it was 1 M nitric acid, which means #60 was 1 M hydrochloric acid. #61 was a strong acid that didn’t react with any of the other solutions, so it was 3 M acetic acid; which means #68 was 0.1 M aluminum nitrate. #62 was a weak acid that did react with NaOH forming brown precipitate, so it was 0.1 M silver nitrate. Both of #63 and #69 are weak acids, but, #63 did react with 0.1 M silver nitrate, so it…
This experiment was divided into two parts: one part was to observe the properties of a single Alka Seltzer tablet and the second part was to find the percentage of CO2.
In the first part of the experiment, the visible properties of Alka Seltzer were observed and recorded. Each Alka Seltzer contains the same three ingredients: 325 mg of Aspirin, 1000 mg of Citric Acid, and 1916 mg of Sodium Bicarbonate.
Two of Alka Seltzer’s ingredients, Citric Acid and Sodium Bicarbonate (Baking…
Process To Make Copper Coated / Plated Nails
1) Measure out 1/4 cup white vinegar and put into the glass bowl.
2) Add 1 teaspoon salt. Stir salt until it dissolves in the vinegar.
3) Take a penny and submerge it into the vinegar solution 1/2 way for 10 seconds.
4) Remove penny. What do you notice? What do you think happened?
5) Put all the pennies into the bowl and let them sit in the white vinegar solution for 5-10
minutes (take notice of how the pennies look before putting them in).
One of my project this semester was to improve the Cresyl Violet (CV) staining protocol used in the laboratory. Cresyl Violet is a dye used to stain brain tissues and it is commonly used in histological sectioning. The dye is basic and therefore it binds to ribosomes that are RNA rich and nuclei of cells, which are acidic. Also, the dye leaves a purple color on the stained neuronal tissues. For the purpose of most of our studies, Cresyl Violet staining is used to analyze the lesion…
Nimodipine 0.02% solution contains the following excipients:
Ethanol 96%, Macrogol 400, sodium citrate, citric acid, Water for Injections Ph. Eur.
These excipients consist of properties that aim towards the proper functionality of Nimotop. They consist of inherent stabilities that cause little or no effect in the stability of the drug and they do not have any acute or chronic toxicity. The excipients are also added into the Nimodipine 0.02% solution to enhance the biological…
CHEM 1252 L
Exp 12: Thermodynamic Analysis of Chemical Equilibria
The reaction being done with borax and HCl is an acid base reaction. The K constant expression of the reaction is Kc = [Na^+][B4O7^-2]. A titration is needed for this experiment because when a strong acid with a known concentration is added to a weak base, the unknown concentration of the weak base can be found, which can then find the moles of the weak base, which can then find the Kc. The first law of…
Extraction of Caffeine from Tealeaves
Rosheen Villaraza, Dana Young, Dana Yu*, and Ray Zafra
Department of Biological Studies, University of Santo Tomas, Manila, Philippines
Experiment 3 highlights the separation of caffeine from tea leaves and using chromatography for testing its purity. Extraction is a method of separating the desired from the undesired substance in a mixture through the solubility properties of the substances. In the experimental extraction, Camellia sinensis was…
The theoretical treatment of the equilibrium structure of the derivatives was based on the DFT method using the functional B3LYP with the base 6-311 ++ G (d, p). To distinguish the molecular electrostatic potential surface (MESP), we used the principle of HSAB (Hard Soft Acid and Base), in order to have the centers of activity of a molecule and the effects of substitution on the systems of pyrazolooxazine. These have anti-inflammatory activities. In our work, we have applied methods of…
The melting point ranges for the substances Tartaric Acid, Acetaminophen, and Phenacetin, which are in powder form and white in color, was found and compared to their literature values to find their purity. The melting point range of a 9:1 mixture of Phenacetin and Tartaric acid was later found to show the effect an impure substance has on temperature. Melting point range for unknown three that was lastly tested was matched to Acetaminophen by comparing their melting points.…
Purpose: The experiment focused on isolating terpenes from citrus peels using supercritical carbon dioxide liquid phase. The experiment also focused to identify/ quantify organic compounds using IR and gas chromatography.
Experimental: The experiment procedure can be found in the Organic Chemistry Manual in chapter 6.2 pages 6.11-6.21 and also in Appendix D: experimental records
Results and Discussion: Part A: All the lemon peel date was obtained from my lab partner Irini Petros as cited in…