Hydrogen sulfide

Beginning Question: How effectively and efficiently can biphenyl be synthesized by a Suzuki coupling reaction? Claims: Biphenyl synthesized by a Suzuki coupling reaction was effectively isolated and then characterized using TLC, melting point, IR and 1H NMR tests. However, this process was not efficient because it had a poor pure yield of 22%. Evidence: The goal of the experiment was to synthesize biphenyl product by a Microwave-assisted Suzuki reaction and this was carried out using 1…

known as the stationary phase, the solvent mixture, the mobile phase, was added. The solvent mixture moved up the plate via capillary action. Considering different analytes ascend the TLC plate at different rates, due to their varying abilities to hydrogen bond with the stationary phase, the identity of the final products were distinguished (Clark,…

Abstract The Purpose of experiment is to introduce the technique of crystallization, by following methods to purify the antibiotic sulfanilamide away from acetanilide. From the laboratory experiment, 0.51 g of impure sulfanilamide was at first measured and experienced in the crystallization procedure. Because of different steps of the experiment, the last mass of the crystal was 0.22g. This demonstrates the procedure decreased the underlying mass by 0.28g which mean the 43.13% recovery using…

Aluminum is used in many of our household items. From pie pans to pop cans, Aluminum is a very common product. Charles M. Hall is an American Chemist who figured out how to produce aluminum using his electrolytic method. This method allowed aluminum to be mass produced. Hall was born on December 6th, 1863 in Thompson, Ohio. His father was a missionary and minister who was very educated. Education played a big part in his childhood. He read numerous science magazines and articles as a child. He…

benzoate nitration is one of electrophilic aromatic substitution. Nitronium ion will reacts with protonated intermediate at the meta position. After NO2 substituted, it becomes arenium ion intermediate. Then, the remained product HSO4- will attack hydrogen then transfer the proton to methyl 3-benzoate. In the experiment, students placed around 12 drops of concentrated H2SO4 in 10x100nm reaction tube then add around 6 drops of methyl benzoate into the tube.Then, flick it to let the mixture…

SHOULD WATER CHLORINATION BE BANNED? The recorded deaths due to waterborne diseases have demonstrated that water treatment is critical. Thus, methods like water chlorination have been developed to achieve water quality. This procedure has exhibited notable decreases in diarrhoeal diseases, and has shown prolonged disinfecting effects on many microorganisms when used with ammonia. However, there exists protozoa that are resistant to chlorination, and such spores have led to outbreaks that…

My Element is the Most Important Element (Argon) •Atomic mass 39.948 •Atomic Number -18 •Gas at 298 K •Density-0.0017837 grams per cubic centimeter •Third Noble gas •Chemical Symbol-Ar •It is also obtained from the air as a byproduct of the production of oxygen and nitrogen •It is the third most atmospheric gas •Argon is colorless and odorless •Argon is non reactive and has no effect on living organisms •Makes up 1% of the air around •Argon is found in the earth’s crust…

There are many spectacular events that happen in the universe. Some events are as common and simple as a sunrise in the morning or the northern lights dancing across the night sky. Other events are less common and hold a beautiful mystic to them like a comet streaking across the sky. Of all the magnificence spectacles that occur in the universe, there are not many that equal the power or beauty of a supernova. Supernovas occur at the end of the star’s life cycle as the star depletes its fuel.…

The objective of this investigation was to separate a dry mixture based on its physical properties. The iron was separated using a magnet and the salt was removed because it was soluble in water, while the remaining sand was not. The mixture in its tray weighed 51.61 grams. The container weighed 2.51 grams, so the mixture alone weighed 49.10 grams. Running a magnet over the mixture successfully removed the iron. It was determined that the more surface area a mixture was spread over, the more…

Lots of American farmers found themselves unable to make enough money to support their families. One of the main ingredients of Moonshine is corn. A farmer could take a subpar corn farm and turn it into a goldmine. Obviously the Government did not approve of this practice. There are a couple good reasons for the Government to oppose this practice. With underground Moonshine sales growing they were losing a large amount of tax revenue; secondly, there was no way to regulate production, and…