Investigation into How the Concentration of a Reactant Can Affect the Rate of Reaction Aim To plan an investigation that allows me to measure the effect of increasing the concentration of a reactant on the rate of reaction. With the results generated‚ it is also hoped to draw accurate conclusions and explain the results using scientific knowledge. Introduction Some reactions are fast‚ for example neutralisation or burning magnesium in air to produce magnesium oxide. However‚ other reactions
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STANDARDIATION OF ACID AND BASE Eunice Ivy B. Gamboa ABSTRACT Solutions of known concentration are prepared by dissolving measured masses of standard acids in distilled water. The concentrations of unknown solutions of sodium hydroxide are determined by titration. An acid solution reacts with a base solution in a "neutralization" reaction. Titrations permit the concentrations of unknown acids/bases to be determined with a high degree of accuracy. In order to analyze unknown acids/bases‚ we must have
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Aqueous Acid/Base Chemistry Resources: Harris ‘Quantitative Chemical Analysis’ Review: Pure water has a pH = 7 Autodissociation: H2O (( H3O+ + OH- K = [H3O+][OH-]/[H2O] -log[H3O+] = 7 [H3O+] = 10-7 M = [OH-] [H2O] = 55.56 M K = 1.8 x 10-16 ; pKa = 15.74 pKa is the acid dissociation constant; low pKa (strong acid‚ high pKa (weak acid we can also write Kw = [H3O+][OH-] Kw = 10-14 In water‚ pH + pOH = 14 pH scale Strong
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ANALYSIS Not marble‚ nor the gilded monuments (1): This line is likely an allusion to the lavish tombs of English royalty; in particular‚ to the tomb of Henry VII in Westminster Abbey‚ which contains a large sarcophagus made of black marble with gilded effigies of King Henry and his queen‚ Elizabeth of York. unswept (4): note that the pronunciation here is /UN swept/. with sluttish time (4): i.e.‚ by filthy time. In Elizabethan England the word "sluttish" could describe either a sexually promiscuous
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PRODUCTION OF CITRIC ACID Introduction: Citric acid is a White solid‚C3H4OH(COOH)3‚soluble in water and slightly soluble in organic solvents‚ which melts at 153 oC. Aqueous solutions of citric acid are slightly more acidic than solutions of acetic acid. Traces of citric acid are found in numerous plants and animals‚ because it is a nearly universal intermediate product of metabolism. Large amount of the acid are found in the juice of citrus fruits‚ from which it is precipitated by the
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the percent Concentration of a given Solution using Titration Morphy Kuffour Mrs. Langlis‚ AP Chemistry C-D 9/24/2017 Purpose: Determining the precise concentration of vinegar through titration using a standard solution of Potassium Hydroxide (KOH) (aq) Background: Vinegar is a solution of acetic acid (CH3COOH) in water. The concentration of acetic acid in Vinegar is written as a Molarity (mol/L). In this experiment‚ titration is used to determine the concentration of acetic acid in vinegar. Titration
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Between 1801 and 1805 Lord Elgin‚ from the Parthenon in Athens‚ obtained the Elgin Marbles‚ which consists of pieces of architecture‚ sculptures‚ and inscriptions. The Elgin Marbles can be found in the British Museum‚ which allow people to understand ancient Greek and Athenian history. Since the sculptures are one of the longest cultural rows in Europe‚ the Greeks want the art to be returned back to their homeland. Because the Greeks believe that the pieces were illegally taken from Greece. On the
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There are more red marbles than black marbles. We were able to address our hypothesis with the data collected because 26.32% of the marbles are red and just 14.47% are black. Also‚ the percentage of red marbles is the biggest in comparison with the others. The percentage of red marbles is very similar to the class average of red marbles. The percentage of red marbles is the highest in our group and the second highest in the class average. Also‚ the percentage yellow marbles is similar
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(Elgin Marbles) Art 1010 “It may be unfair‚ but what happens in a few days‚ sometimes even a single day‚ can change the course of a whole lifetime...” ― Khaled Hosseini‚ The Kite Runner As an educator‚ I spend more time than I ever would like to count. Specifically dealing with issues of property seem to take more time than teaching math facts. When teaching human language‚ the words Mom‚ No‚ and Mine must be a global phenomenon that has been impacting generation upon generation. All the
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9.1 Sulphuric Acid Sulphuric Acid is Manufactured in Industry 1. Sulphuric acid‚ H2SO4 is manufactured in industry through Contact Process. 2. The raw materials used are sulphur‚ air and water 3. The Contact process consists of three stages. Stage 1: The production of sulphur dioxide This can be obtained by two methods: 1. Burning of sulphur in dry air in the furnace S + O SO2 2. Burning of metal sulphide such as zinc sulphide or iron(III) sulphide in dry air. 2ZnS
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