Acid Essays

Physico Chemical Qualities

a) Describe the physico-chemical qualities of water that are important to aquaculturists. Aquaculture can be defined as the high-density production of fish, shellfish and plant forms in a controlled environment. Stocking rates for high-density aquaculture are typically thousand fold greater than wild environments. Modern fish culturists employ both open and close systems to raise fish. Open systems, such as, the raceways are characterized by rapid turnover of water. Closed systems are commonplace in pond culture. Closed aquaculture systems do not…

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Experiment with Acetic Acid Chloride, Ethanol

Experiment 1: Bromination of Acetanilide1 Precautions: Ethanol is flammable Sodium hypochlorite is an oxidizing agent and releases toxic fumes (handle in fume hood) Acetic acid is corrosive, harmful if inhaled, flammable and can cause burns (handle in fume hood) Gloves are recommended to avoid chemical contact with skin Reaction Scheme: Conversion of acetanilide to p-bromoacetanilide Procedure: To a 125 mL Erlenmeyer flask containing a mixture of 95% ethanol (6 mL) and acetic acid (5 mL), dissolve acetanilide (7.4 mmol) and…

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How the Ph Changes During a Titration Experiment

Having a higher concentration of alkali will mean that there will be more molecules closer together for the acid to collide with. This will speed up the reaction as collision theory suggests that molecules have to collide to react and if there are more molecules to collide with the reaction will happen faster as there is a higher chance of a collision. Volume of alkali An increase in volume would mean that the neutralisation would take longer as you would…

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Determination of the Valency of Magnesium

To study the quantitative relationship between the amount of reactant and products of a reaction. A known starting mass of magnesium and the measured collection of hydrogen gas will be used to determine the reaction stoichiometry and the valency of magnesium. Introduction: In Chemistry, stoichiometry is the study of the quantitative relationship between amounts of reactants and products of a reaction (that is, how many moles of A react with a given number of moles B). Stoichiometry refers to the…

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Lab Report on Acid Base Titration

1. Aim: To determine the weight-to-volume percent of acetic acid present in commercial vinegar and the weight-to-volume percent of ammonia present in window cleaners. Acid-base titrations can be conducted using the above samples against standardized aqueous NaOH and standardized aqueous HCl solutions respectively. 2. Introduction: Acetic acid, commonly known as ethanoic acid CH3COOH, is found in commercial vinegar. It is a weak organic acid that gives vinegar its characteristic pungent smell, sour taste and slight acidity. Being an acid, vinegar…

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Soaps and Detergents

The results of the soap tests indicate an unsuccessful synthesis of soap. Minimal amount of foam was observed from any the tests. It was expected that foam would be presents in DI water, but decreased in CaCl2 or Trisodium because it makes the water a “hard water” and causes the soap precipitate, make it ineffective. As seen from the results, the synthesized detergent is effective in both soft (DI) and hard (with CaCl2) waters. When the salts were added, no…

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Observation of Chemical Changes

Abstract: The purposes of this lab is to observe the reactions of some common chemicals contained in consumer products and observe the macroscopic changes these chemicals undergo. Purpose: The purpose of the lab is to be able to interpret underlying macroscopic changes in terms of the behavior of atoms and molecules and also to learn how to separate mixtures into their component substances by solubility. Procedures/Materials Needed: 1 Toothpicks 1 Sheet of white and dark paper 1 Paper towel 1…

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Which Antacid Neutralizes Acid the Best_

Description This experiment was conducted to find out how effective different types and brands of antacids are at neutralizing acid. I also looked at the cost of each product in order to determine if my hypothesis would be correct. The experiment was done using 4 brands of antacid, Pepto-Bismol, Gaviscon, Tums and Tagamet. Hypothesis All the antacids will neutralize different amounts of acid but the most expensive one will be able to neutralize the most acid. Overview Antacids Antacids are…

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Factors Affecting the Rate of Catalase Activity

Factors affecting the rate of catalase activity The extent at which environmental factors affect the rate of catalase activity was discovered in this lab. The assay system, in which a filter paper disc was dipped into the enzyme and submerged using a stirring rod in a test tube filled with 20mL of hydrogen peroxide, was used to test several enzyme factors. As the saturation of hydrogen peroxide increased the rate of reaction increased as well. When the enzyme concentration increased…

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Science Investigatory Project

CHAPTER I- INTRODUCTION We all know that teenagers today are very eligible especially in wearing dress. We are more confident if we are wearing comfortable clothes. So it is very important for us to have a a clean and neat dress. All over the world, it is not ordinary to have a problem with our clothes. Many of the housewives has a difficulties to remove the stains in the clothes of their husband especially those who are working construction helper,…

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Lorenzo Oil Questions

1.)The Odones showed scientific method by first they researched all they could about the disease. They read all the available studies on the topic, and even read beyond ALD-specific studies to learn about other experiments and studies on similar topics that might help them understand the issue. Then they came up with a hypothesis, using an oil on Lorenzo by feeding him it to see if it would reduce the fats in his blood. They charted his blood levels before…

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Science Neutralizing Lakes

Part 1 – Design a strategy for neutralizing Fish Lake What do I know? (What do I remember about the neutralization reaction) Neutralization is when an acid and base are mixed together to me an ionic compound or which are 7 on the pH scale or pure water, it is also when a base and acid are mixed to make it in a neutral state. What am I wondering? (What are your rough ideas to fix an acidified lake?) I…

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Lab Enzymes

Introduction How does changing the surroundings of enzymes affect their reaction rate? The purpose of the experiment is to determine how different abiotic conditions affect the rate at which enzymes accelerate/cause reactions In this lab students measured the height of the foam after catalysis between catalase (enzyme) and 7 other (solutions) to determine which solution had the fastest reaction rate.. The control variable of the experiment would be the solution of only hydrogen peroxide, water, and catalase. The independent variables…

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Energy Sources and Alternative Energy

Experiment 1: The Effects of Coal Mining Table 1: pH of Water Samples Water Sample Initial pH Final pH (24-48 hours) Pyrite 5 5 Activated Carbon 5 7 Water 5 5 POST LAB QUESTIONS 1. Develop hypotheses predicting the effect of pyrite and coal on the acidity of water? a. Pyrite hypothesis = If pyrite is added to water, it will make the water more acidic. b. Coal hypothesis = If the activated carbon is added to the water, it…

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Chemistry Experiment

How did your proposed procedures or flow charts at the beginning of this experiment compare to the actual procedures of this lab exercise? I had to change the process I did things a little to allow adequate time for the sand and the benzoic acid crystals to dry on the paper towels, and for the water in the paper cup to evaporate from the salt. 2. Discuss potential advantages or disadvantages of your proposed procedure compared to the one actually…

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