Chemistry Essay Examples and Topics

Salicylic acid is administered in the form of tablets, a less irritating method, unlike in the early days where it was administered in the form of leaves.

Therefore, the moles of the limiting reagent is 0. 025, and the mole of the product is 0.025.

This paper focuses on the application of chemistry in life as well as some of the hazards that it has presented to life.

The method of initial rates was employed in the determination of the order and rate law for the reaction. The power to which the concentrations of reactants are raised in a rate law is referred [...]

This experiment aimed at establishing the activation energy for the reaction between oxalic acid and potassium permanganate by first determining the rate equation for the reaction.

According to Kotz and Treichel, the solubility of various substances increases with increases in the temperatures of their surroundings, although this is not always the case.

The main difference between acidic and basic solutions is the concentration of hydrogens ions: for the former, it is higher than that of pure water, and for the latter, it is lower.

This point was the basic idea for performing this study, in which acetylsalicylic acid, which is the main component of analgesics, was actively hydrolyzed to salicylic acid: the reaction is shown in Figure 1.

The central purpose of this experiment is to study the primary salt effect in the oxidation reaction of iodide ions to iodine during sodium thiosulfate titration with appearance of salt KNO3 All steps of the [...]

The objective of this experiment is to determine the amounts of the component parts of hydrated copper Sulfate. The third procedure is the scrutiny of sulfate ion in a sample of copper sulfate.

The chemical process in this experiment entails reacting salicylic acid and methanol in presence of concentrated sulfuric acid, which catalyzes the reaction, and under reflux conditions to form methyl salicylate and water.

Some of the chemical processes used in the bottom-up approach include sol-gel process, the reaction of molecules in a flask, reverse microemulsion and flame synthesis, which have been used to make silica nanoparticles, nanozeolite, nanocatalysts [...]

These pathways are responsible for the breakdown of essential nutrients into Adenosine Triphosphate and other molecules necessary for the release of energy into the body.

The concentration of the chemical reactants also affects the rate of reaction by altering the number of reacting molecules. This increases the rate of collision and hence the rate of reaction.

The color change depends on the relative acid strength of the conjugate acid form of the indicator. Based on the equation above, the acid strength is calculated as:

Bomb Calorimetry is one of the methods to calculate the standard heat of the reaction of various chemical processes. One of the ways of its application is the determination of the standard heat of organic [...]

He schooled in Turin and having come from a family background of lawyers, his career was oriented towards law whereby at the age of 16 years he had already become a bachelor of jurisprudence and [...]

This makes organic chemistry to have a very important role of describing the reaction of the carbon compounds. The aim of the experiment was to identify the functional group of the two unknown organic compounds.

This experiment aimed at establishing the concentration of iodine with time by quantifying the absorbance of the reacting solution at a wavelength of 410 nanometers and finally determining the initial velocity of the reaction.

It contains either a weak acid and its conjugate base, or a weak base and its conjugate acid. The equation links the measured pH of a solution, hydrogen ions concentration, and the dissociation constant of [...]

Following the procedure in the production of acetone, the several materials emerge during and after the production. The production of acetone In the feed drum: A feed is a tank like object used in the [...]

The method of initial rates was employed in the determination of the order and rate law for the reaction. The rate of the reaction and the rate law expression for the reaction were then established [...]

In this view, retinol is unstable at room temperature and in the presence of air. Metabolism of retinyl esters and carotenoids produces retinol, which is an active molecule in the body.

The TLC sheet was placed in a universal bottle containing solvent A with the line of origin nearest to the bottom but above the solvent. The positions of the solvent and each pigment molecule were [...]

The percentage yield of acetanilide is the mass of acetanilide recovered, divided by the theoretical mass of acetanilide multiplied by 100.

The purpose of the experiment was to examine the expansion of a perfect gas by determining the specific heat ratio through an adiabatic process and the ratio of volume using an isothermal process.

The second objective was to confirm that the rate of the reaction is directly proportional to the concentration of the tert-Butyl Chloride if the temperature is kept constant.

An essential condition for the transition of substances to the state of liquid crystals that is for the potential for the existence of such materials is the presence of an asymmetric form of the molecules.

In conclusion, meth is one of the most addictive drugs, with serious physiological and psychological complications hence, the need for individuals to watch their consumption habits.

In analytical chemistry, there are several techniques for determining the formula of a complex compound, but in this laboratory work, the emphasis was on the applicability of Beer's law, recognizing the fact that when a [...]

The precipitative gravimetric analysis allows the use of a net ionic equation for the measurement of the mass of solid calcium oxalate, determination of percent composition of calcium in the salt using the empirical formula, [...]

In the present laboratory work, the main issue is to investigate the potential relationship between WHC as a measure of moisture content and chicken pH; specifically, the question is to identify the effect of meat [...]

Part of the crude product was recrystallized from ethanol and the remaining part was purified by column chromatography in the second week.

The chemical reaction must be such that the energy released in the reaction is concentrated primarily in the excited vibrational states.

The aim of the experiment was to isolate acetylsalicylic acid, acetanilide, and sucrose fractions from Phensuprin based on their acid-base solubility differences. Acetylsalicylic Acid or Aspirin Its synthesis involves treating salicylic acid with acetic anhydride [...]

The boiling point denotes the temperature position where the liquid-vapor pressure establishes an equilibrium with the atmospheric pressure, thus necessitating the liquid to transform into the gaseous phase.

9g of potassium nitrate was added to the water, and the test tube was shaken until all the salt was submerged in the water.

Plastic is any organic material that when heated and pressure applied, it can expand and after it has been cooled it retains that shape it had been subjected to.

The use of corn in the production of ethanol has a number of drawbacks. This is attributed to the fact that the production of high amount of ethanol requires corn in large quantities.

The first objective of the experiment is to elucidate the formation of a ketone from alcohol through the process of pinacol rearrangement in the presence of concentrated sulfuric acid, heat, and boiling chips.

Despite many challenges imposed on the balancing of equations of pertaining reactions, in school my interest was drawn into the study of organic chemistry, which entailed a study of organic carbon compounds.

The rate of migration relies on the strength of the chemical interactions between the analyte and the mobile phase as well as the interactions between the analyte and the stationary phase.

The pH of a solution at the equivalence point depends upon the nature of the acid and the base being titrated.

The volume of the mixture was made to 200 mL in a measuring cylinder. The concentration of the protein in the supernatant was determined using a biuret reagent.

Table 1 contains the data of direct measurements and indirect calculations for p-nitroacetanilide as a product of the EAS reaction of acetanilide. Then the theoretical mass of p-nitroacetanilide could be obtained by the following calculations: [...]

In general, luminescence is understood as the glow of substances not accompanied by heat production but initiated by the absorption of photons.

The purpose of the experiment is to study substitution reactions of alcohols because they can react as nucleophiles or electrophiles, depending on prevailing conditions of the reaction. This experiment illustrates the reaction of 1-butanol with [...]

Sodium chloride is a very important compound and it has thousands of uses in real life, few of them are as follows: NaCl is a raw product that is commonly used in the production of [...]

Therefore, the gluten content of flour affects the physical properties of flour and the corresponding baked products. The leavening agent was baking powder, which consists of sodium bicarbonate and potassium bitartrate.

For the chemical and metallurgical industry, a thorough study of the properties of the materials used and the application of reference data for analysis and possible prediction of the results of a practical application is [...]

The colorimetric method of analysis is used to determine the heat released during a chemical or physical process: the heat released in such reactions is transferred to the water by the change in temperature, of [...]

Of note, caution was taken to minimize the time of contact with the container as this would raise the temperatures of the container hence giving a false impression of the actual temperatures.

In the experiment, salicylic acid reacts with methanol in the presence of concentrated sulfuric acids to produce methyl salicylate and water as the only products.

The rate law demonstrates how the rate correlates with the concentrations of the components of the reaction. It is possible to note that "the power of the concentration in the rate law expression is called [...]

When the concentration of glucose was high, the color and odor of the reaction mixture were darker and more intense, respectively, due to a larger amount of products formed.

Despite being various categories of the lube oil as mentioned earlier in the project, mineral lube oil from petroleum is the commonly preferred lubricating oil to the synthetic lube oil.Fig.showing lubricating oil The history of [...]

The price of the steel, which includes iron in its composition, differs from the steel grade. The main stage is heating of the iron ore in the blast furnace, removing the oxygen from the oxide.

To prepare 500 grams of a 5% aqueous HCl solution, the chemist must have some basic information about the solute and the solution.

The first ten droplets were collected in the first test tube at 80. As the temperature stabilized in the third test tube, 10 additional droplets were collected.

First of all, it should be recalled that the use of electrochemical methods in quantitative analysis is based on the use of dependencies of measured parameters of electrochemical processes on the content or concentration of [...]

The length of the shoot and root of the germinated seedlings was also measured and registered. Germination rate decreased in the solution of potassium chloride.

The heating facilitates the production of formaldehyde gas that bonds the hair with the conditioner. The entire process exposes customers to the risk of inhaling the formaldehyde gas that has negative effects on the body.

In the conversion of the precursor substance tyrosine to dopamine, the following process occurs: the rate-limiting biomolecule in catecholamine production is tyrosine hydroxylase.

In the second part of the work, a mixture of 10 g of solid calcium hydroxide and 50 mL of drinking water in a beaker was initially created.

The first was to determine the unknown concentrations of samples A and B using linear dilution while the other employed the serial decimal dilution method.

The objective of this experiment was to synthesize methyl salicylate from salicylic acid and methanol using sulfuric acid as a catalyst.

The nitrogen cycle is a biogeochemical cycle that describes how nitrogen is converted to compounds and circulates through the air, water, and soil.

Thus, the calculated molarity of NaOH is used to compute the molar solubility of KHT, which is the quantity of KHT moles that are liquefied in every liter before saturation level.

5 ml of KMnO4 were added to the second test tube, which was the color standard for the purple permanganate ion.

This paper is therefore an in-depth analysis of the extraction of lubricating oils by looking at the methods of extraction, description of processes, purpose of extraction and new developments in lubricating oil extraction with emphasis [...]

Small quantities of chlorine can reach the threshold of acute poisoning within a very short time, thereby leading to casualties.

The pinacol rearrangement constitutes the dehydration of pinacol and the stabilization of carbocation by the shift of methyl. The mechanism of the pinacol rearrangement commences with the protonation of one of the two OH groups.

With the current technologies, an electrolyzer working at 100% efficiency needs 39 kWh of electricity to liberate 1 kg of hydrogen.

According to Stein, the value of the index describes the stability of the calcium carbonate contained in water. In the event that the value of LSI is at zero, then water is said to be [...]

The Ka value stands for the dissociation constant of an acid, which is the measure of the potency of the acid in the solution.

The type of bonds and the combination depends on the position of each element in the periodic table. The elements in a compound are always in a fixed ratio and the arrangement is defined.

The general background provides information on the various terms used to describe nylon, the history of nylon, a comparison between nylon and other natural materials, such as cotton and silk, and the standards set aside [...]

In fact, some studies have explored the unknown elements of the catalytic process in naphtha reforming. It is also necessary to note that elements in the hydrocarbons and concentrations of other elements are responsible for [...]

Acetone is the simplest form of the ketones. Acetone is very crucial in the field of organic chemistry.

The gas is used in the manufacture of ethane. The industry uses ethane to manufacture ethylene, which is a crucial resource in the manufacture of plastics and other chemical products.

Consequently, scientists investigated the opportunity to create unique microorganisms that would be able to produce the silk with nanocrystals in the same amount as in natural spider silk.

The concentrations of seawater and brackish water differ considerably; hence, there is a distinction involving the concentrate acquired from seawater desalination plants and brackish water desalination plants.

In this experiment, we will provide a systematic procedure for establishing the mass of the outside layer on a zinc-coated steel sheet.

The solubility product constant is calculated by measuring the concentration of anions and cations in a solution and determining their product.

The addition of hydrochloric acid to the liver in beaker B lowered the pH for catalase. In beaker A, distilled water provided a neutral pH that was essential for the activity of catalase.

5 ml solution of Zinc, Copper and lead were added each to one of the three test tubes containing the pieces of zinc.

Diffusion is the process of movement of atoms from higher concentration region to lower concentration region. The activation energy of vacancy diffusion is high compared to interstitial diffusion.

The purpose of this laboratory work was to evaluate the ideal gas law for the case of gas in a syringe when the pressure was increased.

One of the defining features of ketones and aldehydes is that these compounds are not soluble in water. In conclusion, functional groups of organic compounds can help define some of their features, such as dissolution, [...]

In this experiment, information was collected regarding the mass of the calorimeter and bowl, the mass of the empty calorimeter, the water, and the contents: all raw data are shown in Table 1.

The purpose of this report is to describe the history, structure, properties, and applications in real life of amorphous solids. The molecules of an amorphous solid have a short-range order of action.

The metabolism of acrylonitrile is via multiple pathways but the main one involves the pairing of acrylonitrile with glutathione-S-transferase as a catalyst.

The aluminum industry in Australia is its economic backbone as it is one of the major products produced in the country and is a direct source of income to over 16,000 Australians.

The goal of this experiment was to illustrate various parameters of radioactivity, including the plateau of a Geiger-Muller counter, finding the resolving time of a Geiger tube, verifying the inverse square law, measuring the penetrating [...]

The first objective of the experiment was to demonstrate how pinacol undergoes rearrangement to form pinacolone under the catalysis of heat, acid, and boiling chips.

Therefore, temperature is the determinant of the absorption of the vapor of the combustible liquid by the air. The flashpoint of a liquid is the least temperature, which there will be enough concentrated vapor of [...]

However, it is this severity of the social as well as the environmental issues associated with the production of the mineral that has generated a big concern from the global authorities leading to interventions of [...]

The general structure of an alkane is CnH2n+2, where n is the number of carbons in the molecule. The general structure of an alkene is CnH2n, where n is the number of carbons in the [...]

The general idea of spectroscopic observations is reduced to the excitation of molecules by various external factors usually an electromagnetic field to study the characteristic bands or peaks in the analytical signal output of the [...]

To sum up, oxygen enters the blood through the process of breathing atmospheric air and travels from the nasal cavity through the trachea and bronchi into the lungs, and then, enters capillaries and erythrocytes.

However, regarding the title of the article, the examination of the gel formation is missing in the abstract, and several questions about the chosen research process emerge. The next section in the article is devoted [...]

The osmolarity of various solutions was also evaluated by noting the changes in weight of potato cylinders in the solutions. The movement of carmine particles in the water was random.

The review of the structure of water molecules shows that it has two atoms of hydrogen and one atom of oxygen.

Water alkalinity is a measure of the acid-neutral capacity of water whereas water hardness is associated with the ability of water to form a lather in soap.

This variability is apparent in the morphology of starch granules regarding size and shape, the amount of amylose, the structure of amylopectin concerning the length of chains, and the position of branching.

The Periodic Table is the tool for arranging elements based on the correlation between the periodic function of their atomic numbers and the properties of the elements in question.

The majority of commercial PP is isotactic and possesses a transitional intensity of crystallinity amid the one of high-density polyethylene and low-density polyethylene.

However, the basis has remained unchanged; namely, the addition of a dienophile to a diene by 2,4-conjugation allows the preparation of non-aromatic homocyclic with one multiple bonds in them.

It was shown that the higher the concentration of the polymer in the solution, the slower it flows through the vertical capillary.

The experiment aims to illustrate the way substitution reactions of alcohols transpire. In particular, the experiment aims to illustrate the way 1-butanol undergoes nucleophilic substitution reaction resulting in the formation of 1-bromobutane.

Acetylsalicylic acid Physical properties Acetylsalicylic acid exists in the form of white crystals with a molecular weight of 180. The figure below shows the structure of acetylsalicylic acid Acetylsalicylic acid is soluble in water with [...]

The choice of method is determined by the chemical compound to be analyzed, the time available, the level of accuracy needed and the available time.

The virtual gel should show the band pattern that would result from incubating the plasmid with restriction enzymes as indicated below.

The organic compound has the following structure: The compound is highly soluble in water and alcohol because it is a polar organic compound and has a molecular weight of 291.82.

It is well known that the solubility of ethanol in water is unlimited. Toxicity could be a characteristic of the formation of the reactive oxygen species which can also be present in water.

Considering the structure in the figure above, it is evident that a molecule of water has a line of symmetry that can be traced through the water molecule, acting as a bisector of the angle [...]

The types of cement are based on the amount of tricalcium silicate, dicalcium silicate, and tricalcium aluminate found in the end product.

In addition to the MHD forces, the other force that acts on the bubbles is in the form of buoyancy and it originates from an anode.

This work entails developing a catalyst coupled with the construction of a good reformer in the field of catalysis. The catalyst is released at the end of the reaction and may be used again.

According to the US Food and Drug Administration, cosmetics include all compounds or products that are applied to the body with the aim of beautifying, boosting attractiveness or improving the physical appearance without generally altering [...]