Will Jeffries 11/12/11 Period Two Organic Chemistry Extraction and Evaporation. Separating the Components of Panacetin. Pre-Lab: Analgesic drugs are known for reducing pain‚ while antiseptic drugs reduce symptoms such as fevers and swelling. However‚ some of these drugs can reduce both illnesses. To obtain a pure compound in these drugs‚ the scientist needs to separate the desired compound by taking advantage of the different physical and chemical properties. Such as; different boiling points
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activity can be affected by three factors‚ pH‚ salt‚ and temperature. In this project‚ we will be seeing how acidic fluids will affect the enzymatic reactions. Furthermore‚ this experiment will answer the following questions: What level of pH there must be in order for the reaction to slow down‚ or speed up? Are there specific levels of ph levels that speed up enzymes? Seeing that enzymes tend to do great on themselves‚ my hypothesis is that acid fluids (low pH levels) will actually hinder the enzymatic
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manual. A hydrogen phosphate buffer at pH 7 was used. 60.97g of KH2PO4 (acid) and 20.42g of K2HPO4 (base) were weighed out for use. Data 25mL of DIH2O in 100mL beaker had pH = 7.40. After one drop of 0.50M HCl was added to the beaker‚ pH dropped to 3.08‚ and the change in pH was -4.32. After one drop of 0.50M NaOH‚ the pH jumped to 10.3‚ and the change was 2.9. pH of 25mL of created buffer solution = 6.15 Volume of HCl Added to 25mL of Buffer Solution | pH | Concentration of Acid After Addition
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minute rounds with a 1 minute seated recovery rest. When an athlete performs exercise at maximal level for more than 30 seconds‚ most of the energy comes from anaerobic glycolysis. During this process‚ lactic acid is produced which causes a decrease in pH levels within the muscle cell. This acidity is caused by the accumulation of extracellular hydrogen ions‚ and has been proposed as the contributor to skeletal muscle fatigue. It has also been linked to decrease in performance. A boxer fighting in the
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Murphy Nmezi August 9‚ 2011 Predictions 1. Sucrase will have the greatest activity at pH 6 2. Sucrase will have the greatest activity at 40 °C (104 °F) 3. Sucrase activity increases with increasing sucrose concentration until a plateau is reached. Materials and Methods Effect of pH on Enzyme Activity. 1. Dependent Variable. amount of product (glucose and fructose) produced 2. Independent Variable. pH 3. Controlled Variables. temperature; amount of substrate (sucrose) present; sucrase + sucrose
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Identification of an Unknown Organic Acid Chem 1211K Lab Drawer #15 Wednesday November 13th‚ 2013 Unknown Number: 3334025-CF13 Table of Contents Pg. # Abstract 3 Experimental Report 4-7 Results and Discussion 7-12 Conclusion 13 **pKa Graph 14 Abstract Identifying this organic acid was an extensive task that involved several different experiments. Firstly‚ the melting
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Sofia Dominguez 10-O 19/03/14 Effect of pH on germination of seeds: Design Practical Introduction: The term pH stands for Hydrogen Potential it is used to determine the acidity of a substance. The pH scale goes from 0 to 14. The values that are smaller than 7 indicate the range of acidity. Higher pH values are alkaline and a pH of 7 is neutral. Acidity is a function of the concentration of hydrogen ions (H+)‚ or protons. The strength of alkaline solutions is measured by the concentration of hydroxide
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through a solution‚ from pH 2 – pH 9‚ in which jelly cubes were immersed over a 24 hour period Interpretation Written Communication of the Data C1 Pepsin is an enzyme that works in the stomach and has an optimal pH between pH 1 and 4 or in acidic conditions. From our graph it can be seen that that the lowest mean percentage light transmission for pepsin is when the buffer has a pH of 2. Trypsin is an enzyme that works in the small intestine and has an optimum pH between pH 7 and 8 or in neutral conditions
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test the pH level of everyday fruits to see how acidic they actually are. When eaten‚ which fruit will have the lowest pH (be the most acidic)? Hypothesis A sign that a fruit is acidic is a sour taste. Out of all the fruits being tested‚ lemon is the most sour. The common assumption is that the lemon‚ the most sour fruit‚ will be the most acidic and that the banana‚ the least acidic fruit‚ will be the most alkaline. The hypothesis of this experiment fits this assumption. If the pH of different
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html#ixzz25GXbqItt http://chemistry.about.com/od/chemistryglossary/a/aciddefinition.htm http://en.wikipedia.org/wiki/Acid%E2%80%93base_reaction http://www.chem.purdue.edu/gchelp/howtosolveit/Equilibrium/Calculating_pHandpOH.htm http://idealearthwater.com/faq/what-is-ph-orp Homeostasis - Biology Encyclopedia - cells‚ body‚ examples‚ function‚ human‚ process‚ system‚ organisms‚ blood http://www.biologyreference.com/Ho-La/Homeostasis.html#b#ixzz25GrGwjnr http://www.kentchemistry.com/links/AcidsBases/Electrolytes.htm
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