equation: S2O¬82- (aq) + 2 I- (aq) 2 SO42- (aq) + I2 (aq) The structure of the peroxodisulphate ion‚ with oxidation states‚ is shown below: (Structure) The changes in oxidation state within the reaction are as follows: Element Oxidation state in reactant Oxidation state in product Oxidised or reduced? S (in S2O82-) +6 +6 NO CHANGE O (in middle of S2O82-) -1 -2 REDUCED O (at end of S2O82-) -2 -2 NO CHANGE I -1 0 OXIDISED Therefore we can say that in this reaction‚ the oxygen atoms in the centre
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and Wei October 2‚ 2013 Determining the Mole Ratios in a Chemical Reaction Introduction The purpose of this lab was to determine the mole ratios of the reactants hypochlorite ion (OCI ) and thiosulfate (S O ) when reacted in a chemical reaction. A chemical equation gives the mole ratios of the reactants and products involved in the chemical reaction. When some formulas of the products are not known‚ experimental measurements can be made to determine those ratios. During this
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1.TITLE: To prepare isopentyl acetate (isoamyl acetate) 2. AIM: To make an ester referred to as banana oil from acetic acid and isopentyl alcohol 3.THEORY: This ester is often referred to as banana oil‚ since it has the familiar odor of this fruit O O CH3 H+ CH3 CH3C OH +
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equation with respect to changes in permanganate ion and oxalic acid concentrations and to examine the effect temperature has on the rate of the reaction 1. In part one‚ the reactants potassium permanganate (KMnO4) and oxalic acid (H2C2O4)‚ three determinations were performed‚ each with different initial concentrations of the reactants. Each initial concentration resulted in a unique reaction rate; these rates were then examined using the method of initial rates to determine the order of the reaction with
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component in chemistry‚ and helps in understanding the quantitative relationship between the number of moles of reactants and products in a reaction. Objective In this experiment‚ the reactions between sodium hydroxide and hydrochloric acid‚ and sodium hydroxide and sulfuric acid will be studied. Beginning Questions When will the maximum extent of the reaction occur? Which will the limiting reagent? Which of the two acid-base combinations will absorb/liberate the greatest amount of heat energy
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SPECTROPHOTOMETRIC DETERMINATION OF THE EQUILIBRIUM CONSTANT OF A REACTION M. L. SANGA CHEMICAL ENGINEERING‚ COLLEGE OF ENGINEERING UNIVERSITY OF THE PHILIPPINES‚ DILIMAN‚ QUEZON CITY‚ PHILIPPINES DATE PERFORMED: JANUARY 15‚ 2014 INSTRUCTOR’S NAME: MOISES JEROME GARRERO ______________________________________________________________________________________________________________________________ ABSTRACT The experiment aimed to determine the equilibrium constant Keq of the formation
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Chapter 1 - Scientific Methods Objectives 1. Demonstrate a basic knowledge of classroom/science safety. 2. Understand the purpose of a hypothesis‚ and identify when a hypothesis should be used. 3. Be able to identify the independent and dependent variables in a formalized hypothesis. 4. Differentiate between an observation and an inference. 5. Contrast quantitative and qualitative observations. 6. Given a data table‚ draw and label a graph. Including a title‚ labeled units‚ and legend. 7
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LAB REPORT! EXPERIMENT#5‚6! MANPREET KAUR KHAIRA! LAB PARTNER: VIAN RAIES! The purpose of this lab exercise was to perform the bromination of (E)-1‚2-diphenylethene (trans-stilbene) by addition reaction in which bromine was added across the double bond to yield a vicinal dibromide. The next step was to perform a double elimination reaction by product gained to synthesize an alkyne‚ that is‚ 1‚2-diphenylacetylene. The two major techniques used in this lab were TLC analysis and UV-vis spectroscopy
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the precipitate. In order to determine the amounts needed of each reactant we had to use stoichiometry. First we had to set up a balanced equation of the precipitate reaction that yielded 2.00 grams of CaCo3‚ then we looked at the ratio of moles reactant to moles product. We then substituted the ratio of the molar mass of each reactant to molar mass of the product in for each mole. We divided this to find out how many grams of reactant for every one gram of product‚ and finally multiplied this by two
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MAPÚA INSTITUTE OF TECHNOLOGY School of Chemical Engineering and Chemistry COURSE syllabus 1. Course Code: CHM11- 3 2. Course Title: GENERAL CHEMISTRY 1 LECTURE (for Non- CHE –CHM students) 3. Pre-requisite: None 4. Co-requisite: None 5. Credit: 2 units 6. Course Description: A course designed for freshmen engineering students‚ it covers the structure of the atom‚ writing chemical formulas‚ naming of compounds and stoichiometry involving chemical formulas
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