to be used to identify an unknown sample. Sulphuric acid was to be added to a carbonate solution and an effervescent reaction would confirm the presence of carbonate anions. Another sample of carbonate solution was to be reacted with hydrochloric acid and the gaseous product was to be reacted with a suspended drop of barium carbonate. The presence of clouding in the droplet would also confirm the presence of carbonate anions. Silver nitrate was to be added to chloride solution and the
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Nomenclature for Ionic Compounds Ionic compounds consist of cations (positive ions) and anions (negative ions). The nomenclature‚ or naming‚ of ionic compounds is based on the names of the component ions. Here are the principal naming conventions for ionic compounds‚ along with examples to show how they are used: Roman NumeralsA Roman numeral in parentheses‚ followed by the name of the element‚ is used for elements that can form more than one positive ion. This is usually seen with metals. You
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in car antifreeze Concentration should not exceed 20g. 8 Cleaning Ability Chalk based toothpaste Concentration should be kept minimum possible. 9 Bleaching Characteristics Common bleaching agents is: -Hydrogen Peroxide (H2O2) Concentration should not exceed 1% 10 Plaque Control Pyrophosphates stop formation of tartar by removing deposition of magnesium and calcium on the teeth Concentration of Triclosan should not exceed 0.3% 11 Removal of surface stains
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acid is neutralized by the antacid. Different antacids use different metal hydroxides‚ such as Al(OH)3 or Mg(OH)2. The general formula for this reaction is: M(OH)y + Y HCl [pic] Y H2O + M+y + Y Cl- Additionally‚ some brands of antacids use calcium carbonate as a neutralizing reagent. CaCO3 + 2 HCl (aq) [pic] H2CO3 (aq) + Ca2+ (aq) + 2 Cl-(aq) The carbonic acid formed in this reaction may undergo further reaction: H2CO3 (aq) [pic] H2O (l) + CO2 (g) Procedure Outline This experiment will involve
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are found on page 162 in the textbook Sciencepower 9 Part 7: Test tube; Test tube rack; Dilute hydrochloric acid; Magnesium ribbon Part 8: 3 Test tubes; Test tube rack; 2 Spatulas; 2 Stoppers; De-ionized water; ………………Ammonium chloride; Calcium Chloride Procedure: Part 1: i) Observe and record the physical properties of each starting substance …………………..before mixing the substances together. …………… ii) Pour 2-3mL of potassium iodide solution into a clean dry test tube. ………………iii)
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The cocoa showed the shape of the fingerprint best but the powder went streaky over the lines of the fingerprint when brushed. The talcum powder showed up second best but was also very streaky due to the brush. Calcium carbonate was very hard to see but showed the lines of the fingerprint better than the other two powders tested. The main problem that caused this experiment to be unsuccessful was that the brush we were using was too hard and bristly‚ causing the powders
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report. HARPREET KAUR B.Com - I Roll. No. 313 Project Report On “Investigation on the foaming capacity of different samples of washing soaps and the effect of addition of sodium carbonate on them” Aim of the Project 1. Compare the foaming capacity of different washing soap. 2. The effect of addition of sodium carbonate in them. Experiment - I Compare the foaming capacities of different samples of soap. Apparatus Material 1. Five 100ml conical Flask 1. Five different Soap
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third reaction‚ ammonium carbonate was heated to decompose into two gases‚ due to the absence of anything solid or liquid following the reaction. A wood splint was used to determine that carbon dioxide was present‚ since the lit splint was extinguished when put in the test tube. Therefore‚ the other product is ammonium oxide. The fourth reaction occurred between calcium carbonate and hydrochloric acid. When mixed‚ the two reactants produced a clear aqueous solution‚ calcium chloride‚ water‚ and a gas
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Gerona‚ Evelyn Chemical Reactions Experiment No. 7 Date Performed: Feb. 17‚ 2014 Date Submitted: Feb. 24‚ 2014 Mrs. Vitancol I. Theoretical Framework A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Classically‚ chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms‚ with no change to the nuclei (no change to the elements present)‚ and can often
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Ammonium bromide NH4Br Used in photography 7 Ammonium chloride NH4Cl Used in photography 8 Ammonium carbonate (NH4)2CO3 Smelling salts 9 CaCO3 Limestone/chalk 10 Sodium chloride NaCl Table salt 11 Calcium chloride CaCl2 De-icer for snow on roads 12 Calcium hypochlorite Ca(ClO)2 Swimming pool disinfectant 13 Ammonium nitrate NH4NO3 Used in fertilizer 14 Ammonium phosphate Na3PO4 Used in fertilizer 15 Calcium oxide CaO Used to make plaster 16 Carbon dioxide CO2 Dry ice 17 Chromium oxide Cr2O3 Green pigment
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