hydrochloric acid of volume 25.0 cm3 was pipetted onto a piece of marble which is calcium carbonate. When all action had ceased‚ 1.30g of the marble had dissolved. Find the concentration of the acid Equation: CaCO3 + 2HCl CaCl2 + CO2 + H2O 6. What volume of 0.1 moldm-3 hydrochloric acid would be required to dissolve 2.3 g of calcium carbonate? Equation: CaCO3(s) + 2HCl(aq) CaCl2(aq) + CO2(g) + H2O(l) 7. 2.05 g of the carbonate of an unknown alkali metal (X2CO3) required 8.9 cm3
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CHAPTER I INTRODUCTION: An aqua silencer is used to control the noise and emission in ic engines. The reason why we go for aqua silencer is‚ in today life the air pollution causes physical ill effects to the human beings and also the environment. The main contribution of the air pollution is automobiles releasing the gases like carbon dioxide‚ unburned hydrocarbons etc. In order to avoid this type of gases by introducing this aqua silencer. It is fitted to the exhaust pipe of the engine
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Drain cleaner 2 Sodium hydrogen carbonate NaHCO3 Baking soda 3 Aluminum Oxide Al2O3 Sandblasting sand 4 Sodium hypochlorite NaClO Bleach 5 Aluminum sulfate AI2(SO4)3 Used in antiperspirant 6 Ammonium bromide NH4Br Used in photography 7 Ammonium chloride NH4CI Used in photography 8 Ammonium carbonate (NH4)2CO3 Smelling salts 9 Calcium carbonate CaCO3 Limestone/chalk 10 Sodium chloride NaCI Table salt 11 Calcium chloride CacI2 De-icer for snow on roads 12 Calcium hypochlorite Ca(ClO)2 Swimming pool
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Title: Preparation and isolation of an Ester Aim: To make an ester and purify it Background Theory: Esters are derived from carboxylic acids and alcohols with the presence of a catalyst. A carboxylic acid contains the -COOH group‚ and in an ester the hydrogen in this group is replaced by a hydrocarbon group of some kind. Sulfuric acid (H2SO4)is used as a catalyst for this reaction in order to accelerate the rate at which the product is formed. The general formula of an ester is RCOOR’ in
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Strainer | 1 | Acetone (100%) | 40mL | Calcium carbonate | As much as needed | Pestle and mortar | 1 | Electronic balance | 1 | Scissors | 1 | Ruler | 1 | Measuring cylinder (15mL) | 1 | Beaker (50mL) | 1 | Table 2 shows the apparatus and materials used in this experiment METHOD Preparation of spinach pigment extract: 1. 10g of fresh spinach leaves ( without the veins ) is taken and is placed into a mortar. 2. A pinch of calcium carbonate is added into the mortar. The pestle
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. AIM :. To Determine which Antacid could Neutralize the most Stomach Acid. (Chemistry Project) Project Prepared By: Name Class- Roll no. INDEX page no. Objective 3 Introduction 3 Acids 4 Stomach Acid
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Which Antacid Works the Best? Heartburn is a condition characterized by a burning feeling in the chest and a sour or bitter taste in the mouth. Heartburn usually develops when the acidic contents of the stomach flow back‚ or regurgitate‚ into the esophagus‚ the muscular tube that carries food from the throat to the stomach. Approximately one in ten adults experience heartburn once a week. Heartburn is more common in pregnant women because of the pressure the expanding uterus exerts on the stomach
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ingredients such as aluminum hydroxide‚ calcium carbonate‚ magnesium hydroxide‚ and sodium bicarbonate‚ alone or in various combinations. Antacid products may also contain other ingredients such as simethicone‚ which relieves gas. Antacids differ in how quickly they work and how long they provide relief. Those that dissolve rapidly in the stomach‚ such as magnesium hydroxide and sodium bicarbonate‚ bring the fastest relief. Antacids that contain calcium carbonate or aluminum dissolve more slowly and
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Polyvinylchloride (PVC) film and sheets are used in a variety of application especially for packaging because their permeability‚ transparency‚ tear and impact properties are important. The effect of unmodified and titanate treated nano-CaCO3 on the microstructure as well as on the mechanical‚ barrier‚ optical properties of PVC films‚ prepared by solution casting method were studied. The tensile strength and barrier properties of nano-CaCO3/PVC increase with increasing loading of CaCO3 nanoparticles
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Water hardness is a measure of the amount of calcium and magnesium carbonate dissolved as Ca 2+ and Mg 2+ in water. There are no health hazards associated with water hardness‚ however‚ it causes scaling‚ as well as forming of soap suds. Compleximetric titration is one of the best ways of measuring total water hardness using a standard ethylenediaminetetraacetic acid (EDTA) solution. EDTA solution is used as it has the ability to easily bind with calcium and magnesium ions. EDTA and Ca2+ react at the
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