Experiment 1 :Alkanes&Alkenes:Combustion and action of sulphuric acid. Introduction In the study of organic chemistry‚ the organic compounds which are made up of carbon and hydrogen are called hydrocarbons. They can be gases as‚ propane‚ they can be liquids‚ for example‚ benzene‚ or they can be low-melting solids and waxes‚ for example‚ polystyrene. There are four classifications of hydrocarbons; saturated hydrocarbons or alkanes‚ unsaturated hydrocarbons or alkenes and alkynes‚ cycloalkanes‚ and
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cream measured (fat) that the cows would produce (L. L. Van Slyke‚ 1906). The chemistry behind the Babcock test is that by using the sulphuric acid it will burn all liquid except for the fat. The sample is then added with deionised water then placed in the centrifuge determining the layer of fat (University Kentucky‚ College of Agriculture‚ 2013). Sulphuric acid is important in this method as when it is added this increases the process of the fat layer appearing
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The Effect of the Concentration of Sulphuric Acid on the Reaction Rate with Magnesium Sarah Cain SCH 4UB Mr. Lankin April 1‚ 2009 Introduction The nature of the problem is to design an investigation that examines a variable affecting the reaction rate. In this experiment‚ magnesium will be reacted with different concentrations of sulphuric acid. The reaction is shown by the following chemical equation: H2SO4 (l) + Mg (s) → MgSO4 (aq) + H2
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The Enthalpy Change of the Decomposition of Calcium Carbonate _INTRODUCTION_ RESEARCH QUESTION: What is the enthalpy change of the decomposition of calcium carbonate? BACKGROUND: Enthalpy in chemistry can be thought of as the energy contained within the bonds‚ or the internal energy‚ but it is not heat and you can only measure changes in it. When bond bonds break in the reactants energy is given off‚ when bonds form‚ energy is absorbed. If the energy absorbed is less than the energy released
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Aim: determine the mass of calcium carbonate in chicken eggshells and hence its percentage by mass Apparatus Uncertainty 25.00 cm3 pipette ± 0.03 cm3 50.00 cm3 burette ± 0.05 cm3 250.0 cm3 volumetric flask ± 0.3 cm3 50.0 cm3 measuring cylinder ± 0.5 cm3 Electronic balance ± 0.01 g Uncertainty of apparatus Measurement Mass of eggshell = 3.15 ± 0.01 g Volume of HCl added = 50.00 ± 0.5 〖cm〗^3 Volume of solution = 250.0 ± 0.3 〖cm〗^3 Volume of NaOH pipetted = 25.00 ± 0.03 〖cm〗^3
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Journal of Engineering Science and Technology Vol. 1‚ No. 2 (2006) 203- 211 © School of Engineering‚ Taylor’s University College DRINKING WATER FROM DESALINATION OF SEAWATER: OPTIMIZATION OF REVERSE OSMOSIS SYSTEM OPERATING PARAMETERS MARWAN M. SHAMEL1*‚ OWEE TZE CHUNG2 1 Department of Chemical Engineering School of Engineering‚ Taylor’s University College No. 1‚ Jalan SS15/8‚ 47500 Subang Jaya‚ MALAYSIA *Corresponding Author: marwan.s@taylors.edu.my 2 Malay-Sino Chemical Industries
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(2) 3 When calcium carbonate is heated it decomposes. The equation for this reaction is: CaCO3 → CaO + CO2 a Use numbers from the list to complete the sentences. 2 3 4 5 6 i The number of products in the equation is ....... (1) ii The formula CaCO3 shows that calcium carbonate was made from ....... different elements. iii The equation is balanced because there are ....... atoms on both sides.(1) (3) b Other metal carbonates decompose in a
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Volumetric Determination of Impure Sodium Carbonate (Na2CO3) Introduction: To determine the total amount of carbonate in unrefined sodium carbonate‚ soda ash‚ a titration is done using a standardized solution of HCl. Aqueous HCl is a strong acid and therefore almost completely disassociates into H+ and CL-. Therefore‚ when HCl is used in a titration‚ the H+ is the titrant. Carbonate in aqueous solution is able to accept a proton‚ i.e. it acts as a base. When carbonate accepts the H+ a bicarbonate ion is
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Introduction In order to determine the content of calcium and magnesium in an unknown sample of limestone‚ the utilization of atomic absorption spectrophotometry can help in deciphering the unknown concentrations of each molecule in the limestone sample. Atomic absorption spectrophotometry‚ emits radiation of the correct frequency that is passed through a flame and the intensity of the transmitted radiation is measured¹.The calcium concentration or ppm can be measured using the absorbance of the
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AIM: To carry out a lab experiment to decompose a carbonate using heat‚ also to carry out appropriate tests for the formation of products as a result of this decomposition. DISSCUSION: Carbonates are decomposed by heat into the corresponding oxides and carbon dioxide. The temperature of decomposition depends upon the activity of the metal; that is to say‚ the more active the metal‚ the more stable is the carbonate. Thus‚ the carbonates of sodium and potassium are stable at the highest temperature
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