Four environmental factors of enzymes were tested in lab. The changing of pH‚ substrate concentrations‚ temperature‚ and an inhibitor (NaCl) and the effects it hade on the enzyme turnip peroxidase. Enzymes are biological catalysts which increase reaction rates by lowering the activation energies of substrates. A substrate is a reactant that interacts with the enzyme. The enzyme and substrate can be viewed as the recently discovered "induced fit model"‚ which suggests enzymes are flexible and dynamic
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Chemistry 1211K Lab Report Briana Limage Drawer #D20 Tuesday December 2‚ 2014 Lab Day and Time: Tuesday 2-5 Unknown # 4224034-DF14 Introduction The purpose of this semester long experiment was to determine an unknown organic acid. An organic acid is an organic compound with acidic properties. A base reacts with acids to form salts. Titrations are used to determine the concentration of unknown substances. The purpose of the KHP experiment was to determine the molarity of NaOH. HCl
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ABSTRACT Denim and its various items like pants‚ shirts‚ jackets‚ belts‚ caps‚ etc‚ are the most preferred clothing for today’s youth. This study discusses compositions and methods of reducing or preventing back staining of indigo dyes on the weft yarn and pocket of denim garments. The dye‚ as it is removed from the denim material‚ post treatment with cellulase or by a conventional washing process may cause ‘back staining’ or ‘redeposition’ on the denim material; e.g : re-coloration of blue
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Benzyl Alcohol Benzylamine P-Cresol P-Toluidine Acid/Base | Structure | pH | Why It is a strong/weak acid/base | Benzenesulfonic Acid | | 1 | This is a strong acid because it has a pH of 1. Another reason why this is a strong acid is that its conjugate base has strong resonance stabilization. | Benzoic Acid | | 3 | This is a strong acid because it has a pH of 3. Another reason is that benzoic acid has a conjugate base with strong resonance stabilization. Benzenesulfonic
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|Catalase solution |pH level |Time (seconds) |Distance (mL) | |Milk |8.5 |11/18 |62/100 | |Lemon juice |3 |N/A |Denatured x2 | |Baking soda |11
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the colour of litmus paper. It is a neutral substance. 4. The pH value shows the degree of acidity or alkalinity of a substance. 5. The pH value of a substance can be measured by using universal indicator‚ pH paper or a pH meter. 6. Low pH values mean high acidity (or low alkalinity). 7. High pH values mean high alkalinity (or low acidity). 8. Substances with pH values < 7 : acidic; pH values = 7 : neutral; pH values > 7: alkaline. 10.3 Acids and Corrosion 1. Dilute
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Partitioning of organic acid food preservatives between oil and water Olaya Iturbe Navalpotro Student of Food National Institute -DTU Technical University of Denmark Index 1. Introduction …………………………………………………………..pg. 2-4 2. Theoretical background……………………………………………….pg. 5-18 2.1. Preservatives (Sorbic acid and Benzoic acid) 2.2. Solubility and partitioning of food preservatives in food system 2.3. Measurements of the preservatives partitioning in oil-water system 2.4. Influences of
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acid contributes a surplus of hydrogen ions to a solution. A base contributes a surplus of hydroxide (OH) ions to a solution. 16. Buffer solutions are solutions that resist change in Hydronium ion and the hydroxide ion concentration (and consequently pH) upon addition of small amounts of acid or base‚ or upon dilution. Buffer solutions consist of a weak acid and its conjugate base (more common) or a weak base and its conjugate acid. This is an appropriate name because the solution ‘’buffs’’
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Experiment on Soil Analysis Jacob Pitcher and Derrick Gillespie Chemistry Lab 112 Section 02 4/02/2013 Abstract A sample of soil was tested for possible contaminants and other information using a variety of techniques including moisture analysis‚ pH measurement‚ acid-base titration‚ chloride-ion electrode analysis‚ and flame testing. The sample had a greater concentration of chloride ions‚ no measurable CaCo3 ‚ and lower than standard moisture content. It was contaminated with KCl and likely HCl
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Small temp and ph changes will not result in the enzyme being inhibited from catalyzing its intended reaction. The occurrence of ph and temp ranges of optimum enzyme activity do no support the assumptions made by the lock and key model of ridged active site cavities. Table 1: Record your data on the number of product molecules formed per minute obtained from the virtual lab. # Product Molecules/minute at: |Amount of Substrate |pH 3 |pH 5 |pH 7
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