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Experiment #11 Chemical Equilibrium: Determination of an Equilibrium Constant

1.0 Abstract This lab was purposed to find the equilibrium constant in the reaction involving the formation of iron (III) thiocyanate. The lab was based on scientific concepts of Beer’s and the Chartelier’s principles. The constant equilibrium value of 167.10 was reliable as the percentage error was only 25.64 %, indicating high accuracy and reliability ... Read More
Pages: 15       Words: 3917

A Pourbaix Diagram, Equations and Explanations

A Pourbaix diagram, which is also known as a potential-pH diagram, is a graphical representation of the thermodynamic stability of various chemical species as a function of the pH and the electrode potential (E) under particular conditions, such as temperature and pressure. A Pourbaix diagram can be found in the literature under the name potential-pH ... Read More
Pages: 4       Words: 977
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Investigating the Effect of Potential Hydrogen (pH) on Enzyme Activity

Abstract This experiment investigated how pH affects catalase activity, essential for understanding how enzymes function in biological systems. The experiment used catalase enzyme solution, hydrogen peroxide solution, and pH-varying buffer solutions in six test tubes. The test tubes were labeled with buffer solution pH values, and the reaction was allowed to occur in a 37°C ... Read More
Pages: 6       Words: 1389

Investigating How an Increase in Temperature Affects the Concentration of Aspirin

Research question What are the impacts of an increase in temperature on aspirin concentration? Introduction and Rationale The objective of the investigation is to evaluate how increased temperatures affect aspirin concentration. Temperature is one of the key factors that alter the reaction rate in most chemical reactions and can be used to evaluate the strength ... Read More
Pages: 11       Words: 2910

Organic Chemistry: Hybridization

Part A Hybridisation According to the valence bond theory, hybridization is mixing atomic orbitals to produce new hybridized orbitals better suited for pairing electrons to form chemical bonds because they have different energies and shapes than the original atomic orbitals. To link to four different atoms, for instance, the valence-shell s orbital combines with three ... Read More
Pages: 3       Words: 692

Effect of Different Sugars on the Rate of Respiration of Yeast

Research Question Do different sugars affect yeast’s respiration rate compared to two monosaccharides and two disaccharides during aerobic respiration? Introduction and Rationale One of the central aspects of aerobic respiration is that it takes place in the presence of oxygen and is used in various life aspects, such as fermentation. I first learned about fermentation ... Read More
Pages: 16       Words: 4242

Identification of a Pure Substance Vinegar

A pure substance is a material with constant composition and properties. In order to identify a pure substance, the composition of the substance is determined first. This can be done by doing a physical and chemical analysis of the substance. Once the composition of the substance is known, it can be compared to known standards ... Read More
Pages: 4       Words: 1052

The Genetic Control and Chemical Interaction of Caffeine

Introduction Caffeine is one of the most widely utilized behaviorally active substances globally. Caffeine is a psychoactive drug that influences various neurotransmitter systems, such as activating noradrenaline neurons and antagonizes adenosine receptors. Adenosine downregulates the central nervous system. Therefore, inhibiting its function, caffeine leads to the activation of the brain’s medullary, vagal, vasomotor, and respiratory ... Read More
Pages: 6       Words: 1505

Zeolite, Its Components and Their Solubility in Water

Introduction By 1756, a Swedish mineralogist named Axel had invented the word zeolite. Zeolites may be found in nature, but they are also mass-produced in industrial settings. More than 250 naturally existing zeolite structures have been found and catalogued as of December 2018. The International Zeolite Association Structure Commission examines each novel zeolite structure and ... Read More
Pages: 10       Words: 2644

History of Chemistry

Between 1901 and 2020, the Nobel Prize has been 112 times to 186 Laureates in chemistry history. Some of the winners of this price include Jennifer Doudna, Emmanuelle Charpentier, and Stanley Whittingham. Frances Arnold, Jacobus Henricus Van etc. In this paper, I will focus on Frances Arnold, who won a Nobel Prize in Chemistry 2018 ... Read More
Pages: 4       Words: 902

Domestic Use Water Analysis Lab

Purpose This report focuses on the following objectives To assess the challenges linked to water pollution by comparing tannin levels in untreated and treated water. To determine amount of chlorine present in water specimen and what response will occur if there is chlorine present. To determine if charcoal cleanses water by eliminating dissolved organic substances and how ... Read More
Pages: 7       Words: 1874

Insights Into the Structure of Sunscreen Lotion: A Small-Angle Neutron Scattering Study

Summary In the paper attention has been given to sunscreen lotions their components and mode of operation on the body. Several studies through various authors have done to disentangle the interior structure of ointments and lotions. Initially, to understand this internal oil structure in water creams (o/w creams). Differential calorimeter, x-ray deflection with transmission electron ... Read More
Pages: 10       Words: 2593
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