Titration: Titrations are a quantitative chemical analysis technique. They are done to tell us how much acid is required to neutralise a certain quantity of alkali. A titration is a technique in which a solution of reactant (the titrant) is added to a solution of a second reactant (the analyte) until the end point is reached. The end point of the titration is the point at which the titrant has been added in the right quantity to neutralise the analyte. Usually you can see this by adding a reagent
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Experiment 1 The Nature and Properties of Solutions INTRODUCTION The experiment aimed to describe the various ways of expressing the concentration of solutions; prepare solutions of definite concentrations from standard substances by dilution and solve problems involving preparation of solutions and their concentrations. BACKGROUND INFORMATION A solution is any homogenous mixture of two or more substances‚ the relative properties of which may vary within certain limits. The two components
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Name: Bulose Sihle Student Number: 209504496 Date of Practical: 11 April 2013 Inductively Coupled Plasma – Atomic Emission Spectroscopy Aim The aim of this practical was to use an ICP-OES to perform a multi-elemental analysis of different types of tea. The elements that were analysed in the tea were copper‚ iron‚ manganese and magnesium. The sample is introduced into the plasma as an aerosol. Argon gas flows through three concentric quartz tubes in the plasma torch. This argon gas transports
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Extracting NaCl from Rock Salt and assessing its purity Aim The aim of this experiment was to obtain a pure product from a solution through the processes o extraction‚ filtering and evaporation. Introduction Extraction is used when trying to separate or purify a product. For an extraction to be successful the substance used to make the solvent should readily dissolve. The substance used in this practical was rock salt. The liquid used should not react with the substance that needs extracting
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Results Table 1: Experimental results for part A Trial 1(L) Trial 2(L) Trial 3(L) Trial 4(L) Trial 5(L) Initial Reading 0 0 0 0.4 0.9 Final Reading 19.7 19.1 18.9 19.7 19.9 Titre Value 19.7 19.1 18.9 19.3 19 Table 1 above displays the titres obtained during 5 trials in part A of this assay. The titre values procured in trial 2‚ trial 3 and trial 5 manifests an agreement within 0.1mL. However‚ the result achieved in trial 1 and 4 are outliers because of their distance from other observations
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analysis from other forms of analysis? ____________________________________________________________________________________________________________________________________________________________________________ Q3. Briefly describe the process of volumetric analysis. ____________________________________________________________________________________________________________________________________________________________________________ ___________________________________________________________
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Demonstration of the Rates of Reaction Between Sulphuric Acid (25mL ±0.5mL) and Magnesium (0.02g ±0.01g) Changing Due to Different Surface Areas By Chania Baldwin Introduction: When sulphuric acid and magnesium are added together‚ magnesium sulphate and hydrogen gas is created. To create such a reaction the atoms must collide with a sufficient amount of energy. Every reaction requires a different amount of energy to create the reaction‚ which is called the activation energy; when there is not enough
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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 Melting point experiment apparatus Melting point apparatus Capillaries Thermometer Bunsen burner Recrystallization Filter paper Buchner funnel Conical
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BROMATE EXPERIMENTAL PROCEDURE (this is an alternative procedure) Preparation of Standard 0.015 M Potassium Bromate Weigh approximately 2.6 g of dried and cooled reagent grade KBrO3 to the nearest 0.1 mg. Transfer quantitatively to a 1000 mL volumetric flask. Initially‚ dissolve the KBrO3 in about 200 mL of distilled water. Dilute to the mark and mix thoroughly. Calculate
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at that particular point‚ which can then be used to calculate the velocity across the matrix. This will enable me to determine how the pressure and flow performs in a non ideal situation by comparing the assumed volumetric flow rate at the pitot-static section with the calculated volumetric flow rate at the venturi. This will allow me to further discuss issues relating to why the values are different if they give different results. Theory Bernoulli’s equations are based on ideal flows‚ this means the
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