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    Explain the relationship between the ionisation of amino acids and pH |Structural diagram of the neutral structure| |Structural diagram of positively charged structure| |Structural diagram of negatively charged structure| Explain how the form of an amino acid, whether positively charged, negatively charged or neutral, depends of the pH of the solution ? If you increase the pH of a solution of an amino acid by adding hydroxide ions, if this is done then the hydrogen ions will then

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    mostly used to show the pH of fish tanks and pools, measuring from 6.0 (yellow color) to 7.6 (green to blue). In the first experiment we exhaled into the solution. As the carbon dioxide from our breath absorbed into

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    Buffers Lab

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    capacity at pH 4. To do this, buffer #1 consisted of the mixture of 0.5003 M acetic acid and .50 M sodium acetate, while buffer #2 consisted of the mixture .5003 M acetic acid and .4289 M NaOH. Within each mixture, there is a ratio of conjugate acid to conjugate base. By using the Henderson Hasselbalch equation, the volume for the base and acid to buffer the pH of solution at 4.0 were calculated. Two titration were performed for each buffer: HCl and NaOH. A pH meter was used to record the pH change

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    Experimenting the Effects of pH Levels on a Liver’s Enzyme Rate of Reaction What is the effect of pH levels with variations of 1.0, 2.0, 5.0, 7.0, 9.0 (±0.5) on the effect of rate reaction measured by volumetric amount in mL (±2.5) when time (180 seconds), temperature (23ºC) and substrate concentration (1g of 100%liver (±0.01)) are kept constant? This experiment was successfully conducted by placing the pieces on liver inside several flasks holding different pH levels and measuring the amount

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    Buffer Lab Report

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    Introduction Buffer is a solution that resists a change in pH when bases or acid are added. Solutions that are acidic contain high concentrations of hydrogen ions (H+) and have pH values less than seven. Buffer usually consist of a weak acid, and its conjugate base or a weak base and its conjugate acid. The function of buffer is to resist the changes in hydrogen ion concentration as a result of internal and environmental factor. This buffer experiment is important so that we relies the important

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    The topic of this research paper will cover over Ocean Acidification and the effects on marine ecosystems. Ocean acidification is the decrease in pH levels of the Earth 's oceans, due to overbearing carbon dioxide being brought by the atmosphere. The carbon dioxide is drawn by seawater, where the chemical reactions take place, which minimize the pH levels in the ocean, the carbonate levels and the important calcium carbonate which these sea creatures need. When carbon dioxide disperses in this ocean

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    Ocean Acidification Lab Dyana Padron Chemistry Ms Johnson June 1st 2015 Introduction: Ocean acidification is when the ocean 's pH is downsized. Ever since the industrial revolution, CO2 (carbon dioxide) has increased in the earth 's atmosphere, and much has been absorbed by the oceans, which has made a very large increase in the ocean 's acidity, when carbon dioxide is absorbed into the water, it dissolves forming carbonic acid, which is a factor that take a large part in the acidity raising,

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    Chemistry Extended Essay “How does pH affect the concentration of trihalomethanes formed in a sample of reservoir water when it is disinfected with chlorine or chloramine and to what extent do both chloramine and free chlorine decompose when exposed to ultraviolet light?” Abstract This investigation aims to find out how pH affects the concentration of trihalomethanes formed in a sample of reservoir water when it is disinfected with chlorine or chloramine and the extent to which both

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    Orange Juice Preservation

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    preserved orange juice are presented in Table 1. The pH of the examined orange juices ranged from 3.30 to 3.66. The pH decreased with increasing week of storage indicating acidity in orange juices. The use of sodium benzoate, sodium metabisulphite and potassium sorbate as preservatives significantly influence the pH of orange juice. The pH of samples was stable throughout the first and second week of storage. However, on the third week of storage, the pH of orange juice preserved using sodium metabisulphite

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    Pantoprazole Research Paper

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    thereby it is very efficient for the treatment of gastric and duodenum ulcers. But pantoprazole sodium is acid labile drug that will degrade in acidic environment of stomach resulting in therapeutic inefficacy. Hence it is necessary to bypass the acidic pH of the stomach which can be achieved by formulating delayed release dosage forms (single unit or multiple units) by using different enteric polymers The present study was an attempt to formulate and evaluate enteric coated tablets for pantoprazole sodium

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    Definition “The acidification of an ocean currently is a greater and a faster then anything geologists can catch in the fossil record of the previous 65 million years” Main causes of acidification Ocean Acidification as its name suggests, the lowering pH of an ocean water. Its is caused by the suspension of an reaction of the carbon dioxide in the water .The process used for making of a soft drinks to produce a bubbly acidic taste. However as one of may unclear a clam living in pool filled with

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    Catalase Experiment

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    effect of pH on the rate at which catalase decomposes hydrogen peroxide and consequently answer the researchable question “How does pH influence cells and consequently an organism”. The hypothesis, “As the pH deviates from 7 the initial rate of oxygen production will decrease” is supported by the results. The trend displayed in Figure 3 is, as the pH deviates from 7 the initial rate of reaction decreases. Figure 3 shows that the rate of reaction (%O2/s) decreases substantially as the pH increases

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    The effect of pH on the speed of enzyme interaction with substrate chemicals Hypothesis: About pH: If the pH level is less than 5, then the speed of the enzyme reaction will be slower. About temperature: If the temperature stays the same, then the speed of the enzyme reaction will not be completely affected. Background information: The function of enzymes is to speed up the biochemical reaction by lowering the activation energy, they do this by colliding with the substrate. All enzymes are under

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    Faiza Shareef OCEAN ACIDIFICATION The stuffing of carbon dioxide in our earth’s environment is mirrored by an increase in the amount of carbonic acid present in the oceans .The sea water absorbs carbon dioxide, the reaction occur and the pH of the sea water decreases the carbonate ion concentration in the water and the saturation states of the biologically important calcium carbonate minerals also reduces. These reactions are named as ocean acidification .The ocean is found associated

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    specific shape, and the shape of enzyme is depending on the environment, therefore it is hard for an enzyme to function well in an extreme environment. The aim of this experiment is to see can the enzyme functions normally in different environment(pH, temperature and salt concentration) via using starch solution, amylase from saliva, 0.5M HCl solution, 0.5M NaOH solution and NaCl solution, and using iodine solution

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    You must first test the pH level of the amylase and starch solution using pH test strips, so that the experiment may be fair m. Then measure 3cm3 of amylase solution using the measuring cylinder, the pour it into the test tubes labeled A1-A5 n. Do the same for the starch solution but pour into the test

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    Gellan Gum: A Case Study

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    Gellan gum is an anionic deacetylated exocellular polysaccharide secreted by Pseudomonas elodea with a tetrasaccharide repeating unit of one á-L-rhamnose, one â-D-glucuronic acid and two â-D-glucuronic acid residues 30. It has the propensity of gelation which is temperature reliant or cations induced .This gelation involves the formation of double helical junction zones followed by aggregation of the double helical segments to form a three-dimensional network by complexation with cations and hydrogen

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    Catalase Enzyme Lab

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    includes the pH it is exposed

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    individual who worked for over twenty years in the war industry. For at least 8 hours a day, this individual had inhaled and was exposed to chromic acid.[8] Furthermore, another example of an environmental factor is swimming pools with a critically low PH. This can be an issue as people constantly take in water while swimming and spit it back out. This leaves the teeth under constant acidic

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    Banc Instructor: Elizabeth Kraske Date: 09.26.2016 Predictions 1. Sucrase will have the greatest activity at pH 6 2. Sucrase will have the greatest activity at 50 °C (122 °F) 3. Sucrase activity increases with increasing sucrose concentration 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 incubation time

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