Experiment to investigate the effect of concentration of electrolyte on the current of voltaic cell Aim The aim is to identify the relationship between the concentration of H2SO4 solution and the current of Cu-Zn voltaic cell. Hypothesis My hypothesis is that the greater the concentration of sulfuric acid the bigger the current of the voltaic cell. In a voltaic cell‚ chemical energy is concerted to electrical though the oxidation and reduction happen on the electrodes. Current will not flow
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Experiment 21: Reaction of some Akyl Halides Completed on November 13‚ 2012 Purpose The purpose of this experiment was to examine reactiveness of 10 organic compounds under both SN1 and SN2 conditions. Table of Chemicals Compound Structure Molecular Weight (g/ml) Boiling Point (°C) Melting Point (°C) Density (g/ml) Safety 1-bromobutane 137.03 102 -112 1.269 Flammable‚ irritant 2-chloro-2-methylpropane 92.57 51 -26 0.89 Flammable‚ irritant acetone 58.08 56.5 -95 0.793 flammable
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EXPERIMENT 5 REDOX TITRATION: TITRATION USING SODIUM THIOSULPHATE Objectives 1. 2. To prepare a standard solution of potassium iodate for use to determine the concentration of sodium thiosulphate solution accurately. To acquire the proper techniques of carrying out a titration. Introduction Redox titrations using sodium thiosulphate as a reducing agent is known as iodometric titration since it is used specifically to titrate iodine. The reaction involved is: I2 + 2Na2S2O3 I2 + 2S2O322NaI + Na2S4O6
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2013 Name : Ryan annasdass arokiasamy ID : 1206875 Group Members : Chan Pei Qie‚Chong Ven Yen Name : Ryan annasdass arokiasamy ID : 1206875 Group Members : Chan Pei Qie‚Chong Ven Yen experiment 19 kinetics : the study of a chemical reaction experiment 19 kinetics : the study of a chemical reaction Results Part A [I-] / mol dm-3 | [S2O82-] / mol dm-3 | [S2O32-] / mol dm-3 | Time /s | Rate of I2 formation / mol dm-3 s-1 | 0.2 | 0.2 | 0.01 | 1.25 | 0.1600 | 0.2 | 0.15 | 0.01 |
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of Chlorine and Iodine in Water I. Introduction The purpose of this laboratory was to determine the amount of chlorine and iodine in a sample of water by titration using a starch indicator and to standardize a sodium thiosulfate solution. Chlorine is added to municipal water supplies to purify it enough to become safe to drink. Iodine is also added to water when people camp or go hiking in the back country where they cannot bring purified water along. Chlorine and iodine are added to kill
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Lab : Iodine-starch Clock Reaction Pre-lab: Before the lab was conducted‚ the concentration of the Iodate ions to be in the mixture made by dissolving specific volumes of solution A with a constant concentration and water was calculated using the dissolution formula: C1V1 = C2V2 Sample Calculation 1: Concentration of the Iodate ions: For mixture 1: C2 = C1V1/ V2 = (0.020mol/L) x (0.003L)/(0.01L) = 0.006mol/L The same calculations were used in the calculating of the
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types of radiation and radioactive emissions in the world wide that can be used in medicine. Iodine-131 has a big effect and usage for medicine where it has 53 protons‚ 53 electrons and 78 neutrons. Iodine-131 has varied uses in medicine where it is utilized as a part of atomic pharmaceutical restoratively and can likewise be seen with symptomatic scanners in the event that it has been utilized remedially. Iodine-131 they can be promptly followed even in moment amounts with such discovery gadgets as gamma-beam
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general rate law for the reaction of S2O82- + I- through a series of experiments and calculations. Materials: -Temperature probe -3 large test tubes -3 rubber stoppers -Pipets -0.20 M KI soln -0.20 M NaCl soln -0.010 M Na2S2O3 soln -2% starch soln -0.20 M K2SO4 -0.20 M K2S2O8 -0.2 M CuSO4 -Timer or stopwatch -Small beaker -Hot water Procedure: Refer to Lab #12‚ No changes Data: Table #1: Quantitative/Qualitative Observations Room Temp: 25.4°C Experiment | Time | Temperature
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Today’s consumers have several options when deciding what kind of vehicle to purchase. The consumers can choose between gas‚ electric‚ diesel‚ and propane. The most common cars are fuels (gas/diesel) and electric. Each kind of power has their own pros and cons which will be discussed below. Although many people favor electric vehicles there are stronger positive benefits to choosing a fueled power vehicle over an electric. I intend to show why i believe fuels such as gas or diesel are better than
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Effect of Iodine on mercury concentrations in dental-unit wastewater John Michael Panganiban and Ian Jasper Ocampo Objective: This study was undertaken to determine whether iodine used to control bacteria in dental unit wastewater could increase mercury concentrations in dental wastewater. Introduction: Two of the major concerns in dentistry are biofilm in dental unit waterlines and the contamination of dental unit wastewater with mercury. Biofilms are microscopic communities that consist
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