Hydrochloric acid

When Kevlar is spun, the resulting fiber has a tensile strength of about 3,620 MPa,[13] and a relative density of 1.44. The polymer owes its high strength to the many inter-chain bonds. These inter-molecular hydrogen bonds form between the carbonyl groups and NH centers. Additional strength is derived from aromatic stacking interactions between adjacent strands. These interactions have a greater influence on Kevlar than the van der Waals interactions and chain length that typically influence the…

of the remaining catalase into a new medicine cup and heat it in the microwave. Repeat the above procedure 3 times using the heated enzyme to dip circles into and record data. Finally take the rest of the original catalase and add a drop of hydrochloric acid to it. Repeat the above procedure 3 times using the acidified enzyme to dip the circles into and record data. b) Take a test tube and place a…

grams of Potassium Ferrocyanide and 125.0 milliliters of distilled water. The 2% Hydrochloric acid solution was created using 2.5 milliliters of Hydrochloric Acid and 122.5 milliliters of distilled water. The Potassium Ferrocyanide-Hydrochloric Acid Solution was prepared by mixing 125.0 milliliters of 2% Potassium Ferrocyanide and 125.0 milliliters of 2% Hydrochloric Acid. The Mix equal parts of 2% hydrochloric acid and 2% potassium ferrocyanide solution JUST before…

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, and…

simultaneously being released. According to the United Kingdom’s National Weather Service, the following pollutants were released during the foggy period: 1,000 tons of smoke particles, 2,000 tons of carbon dioxide, 140 tons of hydrochloric acid, 14 tons of fluorine compounds and 370 tons of sulfur dioxide. In the weeks that ensued,…

They have 16 of the 20 most polluted cities in the world and their pollution is so extreme it has caused acid rain on its neighboring countries like Korea and Japan. They have so much pollution that even the United states of America which is halfway across the world has felt Chinas pollution impact. The air is so heavily polluted it is considered dangerous…

order to convert a carboxylic acid into an ester. As a result of this reaction, the alcohol (-OH) of the original carboxylic acid, Benzoic Acid, will be replaced with the –OCH3 group attached to the original alcohol, methanol. This would then generate the ester, Methyl Benzoate. An ester is a derivative of a carboxylic acid that can be formed in multiple ways. The most straightforward approach to producing and ester involves the interaction between a carboxylic acid and an alcohol, where the…

stock for Hydrochloric acid Stock solution in 0.1N Hydrochloric acid (0.1N HCl): 10 mg of Amoxicillin was accurately weighed and transferred into 10 ml volumetric flask. It was dissolved and diluted to volume make up to mark with 0.1N HCl to give stock solution containing 1000 µg/ml, after than 1ml take to from 1000 µg/ml and dilute to volume make up to mark of 10ml volumetric flask with 0.1N HCl to give 100 µg/ml. Preparation of working standard solution in 0.1N Hydrochloric acid: Prepared…

Cations CHEM 1315-088  Purpose of the experiment: To identify the substances that are present in a mixture. Materials: Test Solutions and Substances 6 M hydrochloric acid, HCl Sodium bismuthate, NaBiO3 (s) 6 M nitric acid, HNO3 0.1 M potassium thiocyanate, KSCN 6 M ammonia/ammonium hydroxide, NH3 3% hydrogen peroxide, H2O2 6 M sulfuric acid, H2SO4 Sodium bismuthate, NaBiO3 (s) 6 M sodium hydroxide, NaOH Cation Solutions 0.2 M silver nitrate, AgNO3 0.5 M lead (II) nitrate, Pb(NO3)2 0.2 M…

Experimental: Materials – double salt (self-made & EIU Chemistry Stockroom), 6 M HCl (EIU Chemistry Stockroom), 10% BaCl2, 6 M HNO3 (EIU Chemistry Stockroom) Equipment – Ocean Optics Spectrometer USB4000, Logger Pro Procedure – In order to find the mass percent of the sulfate, the sulfate needed to separate itself from the rest of the double salt. To do this, experimenters began by weighing out 0.998 g of the double salt into a 250-mL beaker. They then used the graduated cylinder to add about…