Acid Rain Lab Report Introduction: The problem was to see how crushed chalk and whole chalk weather differently. The independent variables are The temperature of the liquids The surface area of the chalk‚ crushed vs whole The dependant variable was the weathering of the chalk; this was calculated by measuring the foam reactant. Procedure: Part B- For the two partners recording data with the room temperature liquids‚ the materials where collected first. Two of the graduated
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Date: 7/11/12 Classifying Acids and Bases Purpose: To observe the typical properties of acids and bases. Hypothesis: The typical properties of acids are identical to the typical properties of bases. Materials: * * Goggles * Well plate * 2 strips of magnesium ribbon * Sodium hydrogen carbonate (baking soda)‚ NAHCO3 * Red litmus paper * Blue litmus paper * Conductivity tester * Beakers of: * Tap water * Dilute bromothymol blue
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using different concentrations of hydrochloric acids (HCl) and indigestion relief tablet. I will also mention the time which was taken in the experiment‚ to see how fast the hydrochloric acid took with indigestion tablet with different concentrations. Indigestion tablets are alkali and they are used for to neutralise the excess acid in the stomach. Indigestion Tablet Indigestion is caused by excess acid in the stomach. The tablets neutralise some of this Acid and this is known as ‘Neutralization’
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Acid Rain Lab #1 Chem. 1 20 February 2016 Concordia University Texas Angelina Luna angelinaluna97@yahoo.com Chem 1- Sect C Acid Rain Lab #1 Professor Koeck Abstract In this experiment our main objective was to create three gaseous oxides CO₂‚ SO₂ and NO₂ by using data that was collected using a pH sensor which was connected to a laptop with LoggerPro and Vernier. We created the gases by bubbling each gas into the water to create the three acidic solutions we were looking for. Once that
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A neutralization reaction of ethanoic acid and sodium hydrogen carbonate Cristina Li 17th April 2017 Introduction The hypothesis is the balloon will be bigger and bigger with the increase of vinegar. The chemical reaction between the baking soda and vinegar produces bubbles of carbon dioxide gas as part of this acid-base reaction. Sodium hydrogen carbonate (baking
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CONCENTRATION OF SULPHURIC ACID BY TITRATION WITH A STANDARD SOLUTION OF SODIUM HYDROXIDE INTRODUCTION Reaction of acid and base is one of the most common reaction in chemistry. This reaction is also widely known as neutralization. In this experiment‚ we used titration technique which involves accurately measuring the volume of a solution required to react with another reagent. An indicator must be used to determine the end point of the titration. The indicator used can change colors at different pH
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chemical reactions and determine if they are exothermic or endothermic. Apparatus: • Test tubes {Around 10-12 in number} • Test-tube rack • Spatula • Digital thermometer { ± 0.1° C} • Digital balance {± 0.01 g} • Measuring cylinder {± 0.5cm³} • Different chemicals Introduction/Theory: Exothermic reactions are those reactions that release energy in the form of heat. Endothermic reactions need to absorb energy in the form of heat to proceed. Enthalpy is the
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Unit 4 Assessment 2-Benzoic Acid Synthesis Synthesis and Investigation of Benzoic Acid Our aims: Create benzoic acid using benzaldehyde and hydrogen peroxide. Then remove some impurities from the benzoic acid crystals. Apparatus: Titration Pipette (25 cm3) Burette (50 cm3) Retort stand Clamp Conical flask (250 cm3) Volumetric flask (250 cm3) and stopper White tile Beakers (250 cm3) Dropping pipette Filter funnel Deionised water Phenolphthalein indicator Volumetric flask
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of Potassium Hydroxide affecting the temperature of water that it is dissolved in. One person stirred in the different concentrations of Potassium Hydroxide while the other measured the temperature as it rose after the pellets dissolved. At times it was difficult to ensure that the pellets were completely dissolved within the solution. Raw Data Table: The temperature of water after dissolving different concentrations of Potassium Hydroxide in it. Concentration of Potassium Hydroxide (g/ml) (±0.01
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Determining the Enthalpy Change for a Redox Reaction Criteria Assessed: Background Design Research Question What is the enthalpy change between the reaction of Zinc reducing Copper II ions? Purpose Determine the change in enthalpy for the redox reduction of zinc reducing Copper II ions. Independent Variable Dependent Variable The change in temperature Controlled Variables Materials/ Apparatus * Zinc powder * 2‚ Foam cups * 10 cm3 pipette * stopwatch * 1.00 M Copper
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