INTRODUCTION: Nowadys‚ indicators have become technologically advanced and can be used for the main purpose of indicating whether something is acidic‚ basic or neutral. This is possible because in solutions of different pH‚ the colour of the inidcator will change simultaneously with pH change. This is made possible by pigments in the indicators. Hand made indicators include universal indicator‚ methyl orange‚ phenolphthalein and many more. Acids and bases are diverse in this world. They are everywhere
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diffusion of water across a semi permeable membrane. Over three days we tested the egg in three different solutions to observe the changes. On Day 1‚ the main question we answered was what happened to the egg when it was placed in vinegar? Before doing this I came to my hypothesis was that the vinegar would eat away at the shell and eventually dissolve the shell since it is an acidic solution. Things with acid are corrosive and sometimes poisonous so they eat away at things. On Day 2‚ the main question we had to
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For old pennies‚ soak the coin in vinegar for at least 24 hours. For bronze coins — usually ancient coins — soak in distilled water (the minerals in tap water can further taint the coin’s surface if soaking for a long time) or olive oil — olive oil is a very gentle way to clean coins‚ but you may need to soak them for several weeks. Silver‚ copper‚ and nickel-clad coins can be soaked in distilled water or‚ to remove tough stains‚ white vinegar. A 6-minute soak in lemon juice may also
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CHAPTER 1 INTRODUCTION 1.1 PRELIMINERIES Due to highly development of chemical and biochemical industries‚ acetic acid has largely produced to fulfil the needs of world demand in production of daily used products and for pharmaceutical needs. Therefore‚ this study is carried out to introduce the production of acetic acid using biological pathways which includes the used of microorganisms. In this chapter will briefly explained on the knowledge about acetic acid and the microorganism
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DESIGN (Production of Vinegar from Banana Peels) Submitted to: Engr. Caesar P. Llapitan Professor Submitted by: Balod‚ Marie Paz Edraira‚ Marie Grace Jurado‚ Orencio III ChE - V Process Description Vinegar Making from Banana Peelings I. Raw Materials For every kilogram of banana peels (Cavendish or saba)‚ add 170 g of sugar‚ 225 g vinegar (starter liquor)‚ 0.879 g bakers yeast‚ 907 g water‚ and 7.05 g ammonium sulfite. II. Procedure Vinegar making is a fermentation
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Determination of the concentration of ethanoic acid in commercial vinegar Introduction: The aim of the experiment was to determine the molarity of ethanoic acid in table vinegar by titrating a sample with alkali sodium hydroxide (NaOH) with a known concentration of 0.1molL-1. The equation of the reaction between ethanoic acid and sodium hydroxide is as follows: CH3COOH + NaOH CH3COONa + H2O When the titrations end point is determined and volumes of reactants are measured the concentration
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Conduct an experiment 5.analyze the results and 6. Draw conclusions. This lab addresses the I&Eb standard: “identify & communicate sources of unavailable experimental error.” Where will the isopod prefer to be most often? (water ‚salt ‚sugar ‚or vinegar) The qualitative features of my isopod are gray segments‚ black/yellow legs‚ and black eyes. The quantitative features of my isopod are 9 segments‚ 14 legs and 2 eyes. Purpose The reason for this lab was to understand the scientific method.
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the odour. Hence‚ this current study aims to investigate the effectiveness of the sunlight in removing the odour and mildew and finding alternatives in replacement of sunlight by using salt‚ vinegar and baking soda. In the experimental procedures‚ dynamo was added to five sweaty shirts. Salt‚ vinegar and baking soda were then added to the three shirts respectively during washing. Repeatedly‚ the experiment was carried out in sunny‚ cloudy and windy conditions to obtain a better accuracy
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home‚ it proves that the hall owner was responsible for this crime. We would not have been able to make an educated deduction without performing the two tests. We would have needed to know what substance was baking soda by seeing how it reacts to vinegar and water. The police detectives use various tests to find the suspects in an investigation. Some
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all be identical so as not to introduce another variable (See Variables in Your Science Fair Project)‚ and large enough to hold more than 8 oz. of liquid * Masking tape * Pen or permanent marker * Teaspoon measuring spoon * White vinegar (at least 8 oz.) * Milk (at least 12 cups); nonfat‚ 1%‚ 2%‚ and whole milk will all work * Microwavable liquid measuring cup; should be large enough to hold 4 cups of milk like this one from Amazon.com * Microwave * Cooking or candy
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