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Chemistry Assignment Examples

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Grignard Synthesis of Triphenylmethanol

Carbon-carbon bonds are the basis of organic chemistry. Attaching carbons and other organic molecules together we can create new molecules and carry out even more reactions to further manipulate our product. In 1912 F. A. Victor Grignard won the Nobel Prize for his discovery of a new reagent, a “rignard Reagent” used in such a…

Soil Stabilization

Soil stabilization is the permanent physical and chemical alteration of soils to enhance their physical properties. Stabilization can increase the shear strength of a soil and/or control the shrink-swell properties of a soil, thus improving the load bearing capacity of a sub-grade to support pavements and foundations. Stabilization can be used to treat a wide…

Experiment to Determine Acidities of Wine

The purpose of this experiment is to determine the total and volatile acidities of each of the wines and compare them. Acidity is a major contributor to the taste of wines. This is especially important in white wines, because there are very little tannins found in it, so acidity can affect the taste of the…

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Qualititive Inorganic Analysis Using the Flame Test

This technique used in analytical chemistry aims to identify the elemental composition of inorganic compounds. Its focus is mainly on the detection of ions in an aqueous solution. Even when substances are in other forms, they are brought into the aqueous state if necessary, before the use of these standard methods. The aqueous solution is…

The effect of catalase concentration on the rate of decomposition of hydrogen peroxide

Enzymes are biological catalysts that catalyze biochemical reactions in living cells and remain chemically unchanged at the end of the reaction. In an enzyme-catalyzed reaction, the substrate binds to the active site and forms enzyme-substrate complex with the enzyme. The enzyme then breaks the bonds in the substrate. The product of the reaction then leaves…

Extraction and Reduction of Metals

Metals are usually obtained from their minerals, by a process called reduction. There are several most common occurring metals found in the earths crust. Most of these are found in the form of minerals or ores. The unreactive metals gold and platinum, and the more reactive metals copper, silver and mercury are found as pure…

The Development of the Periodic Table

In the early 19th century many chemists began to develop their knowledge of analytical chemistry, the classification of compounds, and it soon came necessary to classify the elements. Johan D�bereiner showed in 1817 that atomic weight of strontium lies approximately between that of calcium and barium and that these element showed a number of similar…

Glass Analysis in the laboratory

The examination of the shape, size and type of damage that pieces of broken glass have sustained, plays an important role when answering the questions: How was the glass originally broken and is it associated with a scene of crime? The analysis of glass fragmentation patterns can be so precise, that the type, direction and…

Separation of Liquids by Simple Distillation and Analysis by Gas Chromatography

The purpose of this lab is to separate a 1:1 mixture of ethyl acetate and butyl acetate by simple distillation, which is then analyzed by gas chromatography. The chromatography test will then assure us if the distillation gave us a good separation of ethyl acetate and butyl acetate (Figure 1). Both compounds have almost similar…

Analysis of Products by Infrared Spectroscope and TLC

The objective of this lab experiment was to isolate (S)-(+)-Carvone from Caraway Seeds and (R)-(-)-Carvone from spearmint leaves through process of steam distillation by extracting the distillate with CH2Cl2. In addition, infrared spectroscopy, Bayer test, and thin-layer chromatography was performed to analyze the distillate samples. By performing such methods, the enantiomers of the carvone were…

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