Essays on Acetic Acid

Aims and Objectives of the Experiment

This experiment aims at studying the characteristics of titrations with the strength of different acids used in these titrations. This is done by drawing the titration curves of the different titrations that are carried out in this experiment and interpreting those curves. The units of measurement for this experiment are the standard units that are used in titrations. These are molarity (moles/liter) of substances while the quantities are measured in mL (milliliter).

Theory and Principles

Conductometry is a type of electroanalytical method in analytical chemistry. While other electroanalytical methods use equilibria or electrodes, conductometry is different and employs the conductance of materials ...

Homework Assignment 1

Question 1: Explain the key difference between irritation and allergic contact dermatitis. Contact dermatitis refers to a condition in which the skin becomes sore, red or inflamed after direct contact with a foreign substance. There are two types that include irritant and allergic contact dermatitis. Irritant dermatitis occurs after a body comes into contact with acid or alkaline material. It can also be caused by other materials such as a soap detergent, fabric softeners, solvents and any other chemical that get into contact with the body. The irritation is usually confined to the specific area that the body came ...

Experiment Title

Indication of pH and Buffer Solutions Statement of Purpose Train the preparation of the acetate buffer solution (pH = 4.8) and other solutions. Practice the pH measurements. Test the buffer capacity of the prepared buffer solution.

Hypothesis to test:

- property of buffer solution to keep pH, when the strong acid or base are added; - red cabbage juice acts as a natural indicator, which helps to identify the pH of the solution.

Description of the Experiment

Acetate Buffer Preparation: mix 10 ml of 0.2 M acetic acid with 15 ml of 0.2 M sodium acetate, add 75 ml of distilled water was added. Store in an ...

Electrophilic Aromatic Substitution to yield 4-Bromoacetanilide

Introduction Halogenation is a common process in organic synthesis. It is used in industrial and research synthesis as halogenated compounds are used for numerous widely used goods, including plastics. The lab aimed to perform monohalogenation of acetanilide. The reaction is specific since it is performed without catalyst. The typical halogenation is realized in presence of Lewis acid. Halogens molecules are electrophilic, and do not actively react. In presence of Lewis acid, the interaction is rather active.2 The lab used catalyst-free halogenation. The acetanilide molecule contains the acylated amine. As a result, the electronic density is shifted towards the amine ...

There are various ions that are responsible for the acidic or basic nature of a substance. The hydrogen ions and hydroxide ions are both responsible for the acidic and basic nature of substance respectively. A neutral substance contains equal number of hydrogen ions (H+) as well as hydroxide ions (OH-) An acid is substance that dissolve and donate hydrogen ions leading to more number of hydrogen ions in a solution. A substance that dissolves water and release hydroxide ions is considered a base. A base has more number of hydroxide ions as compared to hydrogen ions hence basic. Alkalinity ( ...

Chemistry

2. The nano carrier needs to remain in suspension in H2O, PBS, human serum, etc. What type of polymer do you need to use to decorate the surface of the nanocarrier to achieve this goal? In order to maintain the nanocarrier in suspension in water, Phosphate-Buffered Saline (PBS), human serum a suitable solution a polymer is needed on its surface. The polymer used needs to accomplish three goals. The polymer needs to decorate the nanocarrier surface to enhance suspension and secondly, to prevent protein absorption. Another characteristic is that the polymer evades the immune system. PLGA poly(lactic-co-)glycolic ...

INFRARED SPECTROPHOTOMETRY AND ORGANIC CHEMISTRY

Infrared Spectrophotometry and Organic Chemistry Infrared (IF) Spectrophotometry is designed to determine the sample by measuring infrared radiation absorption of wavenumbers within the region of 4,000-400 cm-1 at different wavenumbers, as it passes through the sample. This technique employs the property that the IF absorption spectrum of the material is typical of its chemical structure. IR spectra are demonstrated in charts drawn via plotting on the abscissa and the absorbances or transmittances on the ordinate. Except when indicated, when the spectrum of the sample is the same in the intensity of absorption at a similar wavenumber to the ...

I. Google Search A. http://www.mymsaa.org/about-ms/overview/ This is a website of Multiple Sclerosis Association of America. Multiple sclerosis is an autoimmune disease wherein the myelin sheath sof the nerves are damaged causing symptoms such as numbness, fatigue, mobility problems and more (Mymsaa.org). 5 Facts

A steroid (Cortisone) was first to treat Multiple Sclerosis relapses in the year 1951.

The French neurologist, Jean-Martin Charcot gave MS its name in 1868. The myelin sheath or the protective covering of nerves is damaged in MS. “Lesions” or “plaques” are the inflamed or damaged areas in the brain and spinal cord. Worldwide, about 2.5 million individuals have Multiple Sclerosis. (Mymsaa.org) No specific author was indicated in the page. ...

There exists about 300,000 plant species on earth, and every individual plant hosts one or more endophytes. However, it is just a few of these plants that have been researched relative to their endophytic biology. Hence, the chance for isolation of new, as well as, interesting endophytic bacteria in plants are important. Endophytic bacteria can be referred to as bacteria that can be isolated from tissues of a surface-disinfected plant or bacteria extracted from inside of a plant, which cause no visible negative effects to the plant. Almost every plant is populated by varied bacteria referred to as endophytes. Majority of ...

Introduction

Aspirin is a commonly used drug. One of the properties of aspirin is that it is an analgesic, meaning that it relieves of pain. Aspirin is also an antipyretic drug meaning that it relieves on of fever. It also has anti-inflammatory properties meaning that if readily relieves swelling from tissues (Ahluwalia, Sunita & Adarsh 231). Salicylic acid has two functional groups. One of the functional groups is the phenolic group while the other functional group is carboxylic acid group. The presence of these two functional groups means that salicylic acid can undergo esterification in two different reactions. In one reaction, ...

Section 1, Identification

Product identifier: 1750-x Manufacturer: Statlab Medical Products Inc Manufacturer address: 23654 Telephone number: 256235 Emergency phone number: 5895622 Recommended use - use within the controlled environment of a laboratory. Restrictions on use - for laboratory use only Section 2, Hazard(s) identification The chemical contains formaldehyde that is a suspected carcinogenic. If an individual is exposed to the chemical, it may lead to eye, skin, and the respiratory system irritation. If there is contact with the chemical, one should use plenty of water to wash it off the region of contact and then ...

Immunohistochemistry

Introduction The Human Papilloma virus (HPV) is an extremely common group of viruses that are found worldwide. There are more than 100 types of HPV worldwide. 13 types of HPV are associated with cancer. They are also termed as high risk type. (WHO, 2013). HPV is transmitted through sexual contact. More than 90% of cases are infected shortly after sexual activity. Cervical cancer is associated with HPV infection that are acquired through sexual contact. 70% of cervical cancer cases are caused by two types of HPV. HPV 16 and HPV 18 are the two strains associated with cervical ...

In the healthcare perspective, according to Gennaro et al. (2000), biochemical reactions are the chemical reactions involved in biochemical and cellular processes and particular actions of substances that affect these processes. Understanding biochemical reactions lead to the “understanding of the molecular bases of diseases”. The knowledge of receptor sites and metabolism (among other things) direct healthcare measures in efficient therapy management. Knowing normal cellular communication and metabolic pattern chemical reactions determine conditions that are abnormal in disease states. To Giese (2013), the scope of pharmaceutical reactions involve those of pharmaceutical biomolecules and biomolecule analogues and the chemical reactions involving ...

Lab Report

Lab Report to Investigate the Effects of Indole acetic Acid On The Tip Of The Coleoptiles. INTRODUCTION The purpose of the lab report is to examine the effect of the artificial auxin hormone on the stems of the coleoptiles. Coleoptiles are protective sheath which encloses the growing shoot of the monocot seedlings. The coleoptiles have high concentration of the hormone auxin which acts as a natural growth regulators. SONI (2010The source of the auxin is in the tip of the growing coleoptiles. This implies that when the tip is removed, the source of the auxin is also removed ...

Chemical equilibrium refers to the condition that occurs when the both the concentration of the reactant and product in a chemical reaction have not net change over time (Helmenstine). There are many chemical reactions that do not go on to completion. These reactions go on until equilibrium is attained. However, the system at this point is not static but dynamic with the forward and the reverse reactions still in progress. Equilibrium reactions are very common throughout chemistry, and most of the biochemical processes taking place in life involve equilibria. One useful feature of an equilibrium reaction is the fact ...

D. - The location of the equivalence point on the graph An equivalence volume for the reaction can be determined using the point in the graph with the greatest slope (Clark, 2002). This point was between 14mL and 16mL of NaOH. The equivalence point is determined by the midpoint between the two points, which is 15 mL. - The volume of NaOH added at the endpoint of the titration for the first trial - The volume of NaOH added at the endpoint of the titration for the second trial. The volume of NaOH that ...

Lab Report on preparation of Esters by Esterification

Introduction The organic esters are characterized using their pleasant and fruity odors. Some of these odors include lead to fruits such as banana, pear, and orange to have their pleasant smelling. When carboxylic acid is mixed with an alcohol in the presence of a strong acid leads to the production of an ester. The strong acid is used as a catalyst and the general reaction is as below. The esterification reaction is a reversible reaction with the forward being referred to as esterification, while the reverse reaction hydrolysis. The general formula of an ester compound is as follows: The experiment aimed ...

Introduction

The purpose of this experiment is to assist one to learn how different equipment in the laboratory is being use when carrying out the experiment. It tests the level of accuracy required when using different apparatus for measuring the volume. For very approximate result of volume, a beaker or conical flask is preferred when measuring volumes of liquids.

Accurate methods of measurement

This is done by the use of burette, conical flask and pipette. These measuring apparatus are discussed below. When a much more accurate measurement is required, always measuring cylinders are preferred Measuring cylinders, which are much more accurate than beakers and conical.

Also volumetric pipettes and volumetric flask the mostly used apparatus used when measuring accurate volume.

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. Journal 1 Findings: According to Ozores-Hampton et al (2002), greenhouse pot trials conducted using immature and mature Municipal Solid Waste-biosolids (MSW) composts as a mulch decreased the percentage emergence and increased MDE (Mean Days to Emergence) of the seeds of several weed species. The greater the depth of composts, the more pronounced were the beneficial effects. Also, it was found that the immature composts, having higher percentages of acetic acid, required less depth of mulch to have the same effect. However, it was noted that the immature compost use would be most suitable where: a) the vegetable crop and the ...

Introduction

A pipette is one of the laboratory instruments utilized in the transportation of a measured volume of fluids. Therefore, the general use of a pipette is to transfer a specific volume of a fluid from one container (measuring cylinder) to another. There are several types of pipettes. They include; Volumetric, graduated, automated pipettes, micropipettes and disposable pipettes. But for the sake of the video, we will concentrate of two: Volumetric and graduated pipettes.

These pipettes are used to transport a single specific volume of a fluid, typically between 1 and 100 ml. They are shaped like rolling pins with a huge belly, one blunted end (the ...