Science Essays

There are many different ingredients in a kitchen that causes a chemical reaction Mth baking soda. This experiment was designed to test 4 kitchen ingredients(Omega oil, water, lemon Juice, and vinegar) mixed with baking soda, to see which one will cause a balloon to expand. It was hypothesized that baking soda mixed with lemon Vice […]

The product of alkenes in this test is an akyl hydrogensulphate. Alkenes are capable of various reactions because of its unsaturation. II. Introduction In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon, Hydrocarbons from which one hydrogen atom has been removed are functional groups, called hydrocarbyls. Aromatic hydrocarbons (arenes), […]

Global environmental concern persists over acid rain, despite increased awareness of the planet’s unhealthy condition. Acid rain is defined as rainfall with pH values below 5.6. To fully understand acid rain, it is crucial to comprehend sulfuric acid production. This project aims to explore the process of producing sulfuric acid, its uses, and the environmental […]

Photography is a very complex form of art, which uses standard chemicals and scientific equations. It is a chemical reaction, which occurs when light hits a film or paper emulsion. An emulsion is part of the film or paper, which is very sensitive to light. This is also the part where the chemical reaction takes […]

Procedure: Obtain 8.5 mL of isoamyl alcohol and 15. 0 mL of acetic acid in a 100-mL round-bottomed flask. Add dropwise 5 mL of concentrated sulfuric acid with boiling chips and reflux for one hour. At the end of the reflux cool the round-bottomed flask in a cold water bath. Pour the contents of the […]

Introduction Chemiluminescence is a method used to measure analyte concentration by detecting the optical emission from excited chemical species. This technique differs from atomic emission spectroscopy (AES) as it involves the emission of energized molecules rather than excited atoms. The emitted light bands in chemiluminescence are wider and more intricate compared to those observed in […]

AIMS /OBJECTIVES To understand the reactions of manganese To prepare Mn(acac)3 and calculate percentage yield To calculate the percentage of Mn and acetyl acetone and the empirical formula THEORY Manganese is a first row transition metal that has a tremendous variety of oxidation states that appear in its compounds. The oxidation numbers range from Mn […]

This experiment is about the synthesis of 3-nitrobenzaldehyde through nitration. The nitration of benzaldehyde is an example of an electrophilic aromatic substitution reaction, in which a proton of an aromatic ring is replaced by a nitro group. Many aromatic substitution reactions are known to occur when an aromatic substrate is allowed to react with a […]

This study aims to analyze the impact of a specific factor on enzyme activity and explore the function and mechanism of enzymes. Enzymes are proteins that act as biological catalysts, increasing the rate of chemical reactions without being altered themselves. They interact with specific substrate molecules due to their unique shapes, which are determined by […]

Here is the abstract: The article examines the compound known as aspirin, which is commonly used for reducing fever and relieving pain. The experiment involves two parts. In the first part, aspirin is produced by combining salicylic acid with acetic anhydride, using phosphoric acid as a catalyst. The second part entails determining the purity of […]

This industrially important reaction of EAS: The Nitration of Toluene exhibits how the attack of a nitronium ion would give out major and minor products at different positions of toluene. This is an electrophilic substitution mechanism. Mixture of concentrated sulphuric and nitric acid will produce a nitronium ion, which will attack ortho-, meta- and para- […]

The purpose of this experiment was to synthesize the Grignard reagent, phenyl magnesium bromide, and then use the manufactured Grignard reagent to synthesize the alcohol, triphenylmethanol, by reacting with benzophenone and protonation by H3O+. The triphenylmethanol was purified by recrystallization. The melting point, Infrared Spectroscopy, 13C NMR, and 1H NMR were used to characterize and […]

The objective of the experiment was to prepare Benzilic acid by multistep synthesis starting with benzaldehyde. In this setup however, product of the first step, Benzoin, is provided thereby omitting the first step involving the conversion of benzaldehyde. For this experiment, the microscale techniques of reflux, crystallization, and melting-point determination were used. Utilizing these techniques […]

The purpose of this lab was to synthesize triphenylmethanol from benzophenone and bromobenzene by the formation of a Grignard compound with the reagents bromobenzene and magnesium metal. The bromobenzene was first transformed into the Grignard compound and was then reacted with the benzophenone to make the final product. The mixture was then mixed with sulfuric […]

The purpose of this week’s lab is to learn to demonstrate a double-replacement reaction of ionic compounds. To accomplish this, two ionic compounds will be mixed together and the product will precipitate out of solution. In this procedure, the product must be precipitated out of the solution and then weighed. For this lab, lead (II) […]

Preparation of 1-bromobutane, an SN2 reaction Preparation of 2-chloro-2-methylbutane, an SN1 reaction Introduction The purpose of this experiment is to synthesize 1-bromobutane from 1-butanol and sodium bromide. In order for this reaction to reach completion there are four major operations that need to be performed. The four major operations include refluxing, simple distillation, separation, and […]

Question Set: 1. What kind of graph results when you plot ml of thiosulfate against time in seconds? 2. What does this tell you about the rate of the reaction? 3. What do you think would have happened to the reaction time if you had reduced the hydrochloric acid by half? Explain why. 4. What […]

In this experiment, the stereochemistry of 2,3-dibromo-3-phenylpropanoic was found to determine syn or anti addition of bromines. The melting point was 199-203°C and the NMR J values angle is at 167 which both prove the erythro-2,3-dibromo-3-phenylpropanoic. Determination of the Stereochemistry of 2,3-dibromo-3-phenylpropanoic acid. An addition of bromine was added to trans-cinnamic acid and it is […]

Fossil fuels provide both energy and raw materials such as ethylene, for the production of other substances construct word and balanced formulae equations of chemical reactions as they are encountered. There are three important steps involved:  Show all reactants and all products in the word equation. Write the correct formula for each reactant and each […]

Classification Tests for Carboxylic Acid and Derivatives Mary Catherine Sarte, John Emmanuel Sy, Allurie Umel,Franklin Yap, Mary Christine YouIntroduction Carboxylic acids derivatives are simply groupsof compounds that contain a carbonyl group butwith an electronegative atom attached to thecarbon. The difference in the structure leads to amajor change in reactivity. The reactions of thesegroups of compounds […]

In this practical, the aim of this experiment was to find out the catalytic power of alkaline phosphate, as well as the rate of reaction and the activation energy of p-nitrophenol phosphate. Enzymes are biological molecules that catalyze a chemical reaction. ‘Enzymes work by lowering the activation energy of a chemical reaction making it easier […]

The text below has beenand unified while keeping the and their contents: The battery reaction involves the oxidation of zinc and the reduction of manganese. To control the time, an iodine clock reaction is used. A pre-measured amount of iodine is injected into the clock reactor using a syringe. Electricity is generated by the reaction […]