Enzyme kinetics (catalase/kmno4) Enzyme catalysis Farah Mohamed galal 22-3014 t09 Introduction: E + S → ES → E + P Enzymes are proteins which act as a catalyst in biochemical reactions(affect the rate of achemical reaction). The substrate binds to the active site of the enzyme. Any deformation of the active site will affect the activity of the enzyme‚ these are some ways that enzyme action may be affected because of them: 1- Salt concentration: If it is close to zero or very high
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OXIDATION-REDUCTION TITRATIONS REDOX TITRATION • involves oxidizing agents and reducing agents titrants and analytes • oxidizing agents used as standard solutions: potassium permanganate‚ KMnO4 potassium dichromate‚ K2Cr2O7 iodine‚ I2 ceric sulfate‚ Ce(SO4) 2 potassium iodate‚ KIO3 REDOX TITRATION • reducing agents used as standard solutions: ferrous sulfate‚ FeSO4 oxalic acid‚ H2C2O4 sodium oxalate‚ Na2C2O4 sodium thiosulfate‚ Na2S2O3 titanous chloride
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St. John’s Senior Secondary School and Junior College Mandaveli Chennai – 600028 A CHEMISTRY PROJECT “STUDY OF THE OXALATE ION CONTENT IN GUAVA FRUIT” Submitted in the partial Fulfilment of the requirement for AISSCE 2010-2011 By Abdud Dayan Adeeb Of Class XII C St. John’s Senior Secondary School and Junior College Mandaveli Chennai – 600028 A CHEMISTRY PROJECT “STUDY OF THE OXALATE ION CONTENT IN GUAVA FRUIT” Submitted in the partial Fulfilment of the requirement for AISSCE 2010-2011
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Titration KMnO4+ FeSO4 12/2/2013 At Alsadek Scientific Association Prepared by: Zainab Alfakih & Jinan Krayem Teacher: Dr. Hiba Nassar Contents Introduction 2 Objectives 3 Theoretical Study 3 Definitions 3 Derivations 3 Equipment 4 Setup 5 Procedures 5 Results 6 Discussion 7 Conclusion 8 References 9 I. Introduction: Oxidation Reduction reactions are chemical reactions in which substances undergo changes in oxidation state. Oxidation is defined as the
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oxidising agent. The active part of this is the manganite ion‚ MnO4-1. The SO4-2 in the FeSO4 and the K+ in the KMnO4 do not react‚ we say they are ‘spectator’ ions and so we will ignore them. Apparatus: * 2 Iron tablets * Pestle & Mortar * 1M Sulphuric acid * 100cm3 Volumetric flask * Weighing scales * Dropping Pipette * Potassium Manganate (VII) – KMnO4 * Burette * 10cm3 Volumetric pipette * Conical Flask * White tile Potassium Manganate (VII) solution
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In the lab‚ the purpose was to standardize a KMnO4 solution than using it to evaluate how close a H2O2’s concentration was to its labeled concentration. In this lab‚ it was decided to compare the concentration of new Publix brand hydrogen peroxide to an old sample of the same solution. From the data collected in the first part by titrating a solution of FeSO4*7H2O with the KMnO4 solution‚ it was determined that the concentration was .028M MnO4-. This was able to be done because a known amount of
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salt" solution with KMNO4‚(second standard) which has to be standardize with oxalic acid (first standard). * To learn how acid-base reactions could be used in titration analyses of unknown substances with basic components. * To standardize potassium permanganate solution KMNO4‚ which then be used for titration of iron unknown solution. * To write the net ionic equations of redox reaction carried out in this experiment. * Concept of experiments: * A standard KMNO4 solution‚ used in
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Title: Spectrophotometric analysis of a two-component mixture Aim: i. To prepare working standards of dichromate and permanganate ii. To measure the absorbance of the prepared working standards of dichromate and permanganate using a spectrophototometer iii. To determine the concentrations of permanganate in a mixture of unknown. Abstract: Working standards of dichromate and permanganate were prepared and absorbance for each found. This was done in order to plot
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each alcohol to observe the reaction between the three alcohols and the KMnO4 solution. For each tube‚ 2ml of KMnO4 solution were carefully added then shaken gently. The test tubes remained standing for 5 min‚ with occasional shaking. After allowing adequate time for the reactions to occur‚ the test tubes were observed to determine if there was any colour change. Results Table 1: Reactions of Alcohols with Lucas Reagent and KMnO4 Oxidizing Agent 1-butanol (Primary Alcohol) 2-butanol (Secondary Alcohol)
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this solution and put it into 90 mL of clear water. • Take out 10 mL of this solution and put it into another 90 mL of clear water. • Keep diluting the solution like this 5 to 8 times. • Is the water still coloured? In Potassium permanganate (KMnO4) we can conclude there must be millions of tiny particles in just one crystal of it. As the temperature rises‚ particles move faster. So‚ we can say that with increase in temperature the kinetic energy of the particles also increases KINETIC
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