Benefits: • sparkling flavor 2. ALUMINUM HYDROXIDE Forms: a. Aluminum Hydroxide Gel (suspension) • contain aromatics and sweetening • not more than 0.5% preservatives b. Dried Aluminum Hydroxide Gel (powder) • colloidial – great adsorptive powers • amphoteric characters Disadvantages: • loss of antacid properties on aging • causes constipation • causes nausea and vomiting Uses: • gastric antacid for hyperchlorhydria • for intestinal toxemia CALCIUM-CONTAINING ANTACIDS • dependent upon
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pH of each of the resulting metal solutions are tested and the products of the reaction between calcium and water is discovered. The tested elements are sodium‚ lithium‚ potassium and calcium and each of them were placed in a beaker filled with water. The resulting solutions pH levels were tested with litmus paper. There were more steps for caclium because it is the only Alkaline Earth metal. For calcium‚ the gas produced in a test tube by the downward displacement of water was collected. Then‚ the
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *4308315385* CHEMISTRY Paper 2 Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name in the spaces at the top of this page. Write in dark blue or black pen. You may need to use a pencil for any diagrams‚ graphs or rough working. Do not use staples‚ paper clips‚ highlighters‚ glue or correction
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(a mixture of aluminosilicates) and heating the mixture to about 1500oC. The chemical reaction releases carbondioxide and partially melts the components to form solid lumps called clinker. The clinker is ground to powder‚ and a small quantity of calcium sulfate is mixed in. This mixture is known as Portland Cement. Chemically‚ its main components are 26% dicalcium silicates ( Ca2SiO4); 51% tricalcium silicates (Ca3SiO5); and 11% tricalcium aluminate (Ca3Al2O6). When water is added‚ a number of complex
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SEMESTER- I PRACTICAL- I VOLUMETRIC ANALYSIS The method to determine the exact amount of the substance in a given sample is termed as quantitative analysis volumetric analysis is a branch of quantitative analysis involving accurate measurement of volumes of reacting solutions. The volumetric analysis is very much in use due to simplicity rapidity accuracy and wide applicability. The reacting substances are taken in the form of solutions and made to react. The concentration of one solution is
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measurement of the acidity of something—in this case‚ your soil. In a nutshell‚ the pH is the comparative measure of hydrogen and hydroxide ions present. At neutral pH 7‚ there are equal numbers of hydrogen and hydroxide ions. A soil pH measurement below 7 is considered acidic and contains more hydrogen ions. Soil pH above 7 is alkaline and contains more negatively charged hydroxide ions. The soil pH is an important number to know because it determines the availability of almost all essential plant nutrients
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Chapter I Problem and its Background A. Introduction Chelating agent is a compound that combines with metal ions to form stable ring structures. It is used to reduce the concentration of free metal ion in solution by complexing it. From the Greek term “chela” that means “the great claw” of the lobster or other crustaceans‚ chelate‚ root word for “chelating”‚ suggests the way in which an organic compound “clamps” onto the cationic element‚ which it chelates. In order for a compound to be
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mineral acids commonly found in the laboratory are hydrochloric acid‚ sulphuric acid and nitric acid. 3. Alkalis taste bitter and feel soapy or slippery. 4. The common alkalis found in the laboratory are sodium hydroxide solution‚ potassium hydroxide solution‚ calcium hydroxide solution and ammonia solution. 10.2 Acid-Alkali Indicators 1. An acid-alkali indicator shows different colours in acids and alkalis. It can be used to test acids and alkalis. 2. Natural indicators can be made
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0.02519 M | 0.02519 M | 0.02519 M | [IO3-] | 0.0254 M | 0.0231 M | 0.0285 M | 0.0249 M | 0.0209 M | [Cu2+] | 1.66 x 10-2 M | 1.61 x 10-2 M | 1.76 x 10-2 M | 2.38 x 10-2 M | 3.58 x 10-2 M | Ksp | 1.07 x 10-5 | 8.59 x 10-6 | 1.43 x 10-5 | 1.48 x 10-5 | 7.48 x 10-4 | Class Data Group | Trial 1 (Ksp) | Trial 2 | Trial 3 | Trial 4 | Trial 5 | Molly and Brooke | 1.07 x 10-5 | 8.59 x 10-6 | 1.43 x 10-5 | 1.48 x 10-5 | 7.48 x 10-4 | Casey and Marissa | 4.60 x 10-6 | 8.00 x 10-6 | 9.24 x 10-6
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of the following problems‚ write complete chemical equations to describe the chemical process taking place. Important note: There are a few physical processes on this sheet – You can’t write an equation for a physical process! 1) When lithium hydroxide pellets are added to a solution of sulfuric acid (dihydrogen sulfate)‚ lithium sulfate and water are formed. 2) When dirty water is boiled for purification purposes‚ the temperature is brought up to 1000 C for 15 minutes. 3) If a copper coil
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