Electrochemistry Essays & Research Papers

Best Electrochemistry Essays

  • Electrochemistry - 1971 Words
    Mapua Institute of Technology School of Chemical Engineering-Chemistry-Biotechnology Physical Chemistry Laboratory 2 Final Laboratory Report Experiment 3: TRANSFERENCE NUMBER 1 CALDERON, Edna DICUANGCO, 2 1Professor, School of Chemical Engineering, Chemistry and Biotechnology, Mapua Institute of Technology; 2Student, CHM171L/A21, School of Chemical Engineering, Chemistry and Biotechnology, Mapua Institute of Technology ABSTRACT Electrolytes contain ions that carry charges...
    1,971 Words | 13 Pages
  • Electrochemistry - 7945 Words
    Electrochemistry is a branch of chemistry that studies chemical reactions which take place in a solution at the interface of an electron conductor (a metal or a semiconductor) and an ionic conductor (the electrolyte), and which involve electron transfer between the electrode and the electrolyte or species in solution. If a chemical reaction is driven by an external applied voltage, as in electrolysis, or if a voltage is created by a chemical reaction as in a battery, it is an electrochemical...
    7,945 Words | 27 Pages
  • Electrochemistry - 582 Words
    1. What occurs during the operation of a voltaic cell based on the following reaction? Ni (s) +Pb2+(aq) → Ni2+(aq) +Pb(s) External circuit Ion movement in solution A. electrons move from Ni to Pb Pb2+(aq) move away from Pb(s) B. electrons move from Ni to Pb Pb2+(aq) move toward Pb(s) C. electrons move from Pb to Ni Ni2+(aq) move away from Ni(s) D. electrons move from Pb to Ni Ni2+(aq) move toward Ni(s) (2) 2. Which processes occur during the electrolysis of molten sodium chloride? I....
    582 Words | 3 Pages
  • Electrochemistry and Corrosion - 374 Words
    Experiment No. 3: Electrochemistry and Corrosion Date Performed: November 4, 2010 CONCLUSION Electrochemistry is a branch of chemistry that studies chemical reactions which take place in a solution at the interface of an electron conductor and an ionic conductor and which involve electron transfer between the electrode and the electrolyte or species in solution. Basically, an oxidation-reduction reaction (redox reaction) is a reaction in which electrons are transferred between species or...
    374 Words | 1 Page
  • All Electrochemistry Essays

  • Electrochemistry notes - 623 Words
    Chemistry 3202 Unit 4 Electrochemistry 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. Define the terms: oxidation and reduction in terms of loss or gain of electrons. P.714 Identify electron transfer in redox equations. P.714 Identify oxidation and reduction half-reaction equations in an oxidation-reduction (redox) equation. P.715- 716 Identify a redox equation as the sum of the oxidation half-reaction and...
    623 Words | 5 Pages
  • CHM096 Tutorial 6 Electrochemistry
     CHM 096 TUTORIAL 6 Mar 2013 (ELECTROCHEMISTRY) 1. Determine the oxidation number of the first name element in the following ions. a) Cr2O72 d) AsO33 b) SbF6 e) BaH2 c) MoO42 f) ClO4− 2. Determine whether each of the reactants shown in the following half-reactions is being oxidized or reduced. a) As4+  As3+ b) Cl2O7  HClO4 c) C2H4O  C2H6O d) SO2  SO42− e) Cr2O72−  Cr3+ 3. Indicate whether each of the following is...
    1,791 Words | 8 Pages
  • Electrochemistry: Electrode Potential - 2915 Words
    Abstract Chemical reactions can be used to produce electricity and electricity can be used to cause chemical reactions through oxidation-reduction reactions. The first part of the experiment measures the standard electrode potentials of five various half cells against the Cu2+(1M)|Cu half cell. The last three half cells are prepared through electrolysis. The electrode potentials of all reactions are positive which means that they are spontaneous. There is a significant percent difference from...
    2,915 Words | 12 Pages
  • Electrochemistry Lab Report - 1240 Words
    Introduction A Voltaic Cell (also known as a Galvanic Cell) is an electrochemical cell that uses spontaneous redox reactions to generate electricity. It consists of two separate half-cells. A half-cell is composed of an electrode (a strip of metal, M) within a solution containing Mn+ ions in which M is any arbitrary metal. The two half cells are linked together by a wire running from one electrode to the other. A salt bridge also connects to the half cells. Through electrochemistry, these...
    1,240 Words | 5 Pages
  • Microbial Fuel Cell - 1230 Words
    I. Introduction The world’s current way to produce, convert and consume energy comes with a price. Development of sustainable energy technologies which can continue providing the society with energy-derived benefits without further environmental destructions is highly desired. A series of green energy solutions, such as solar, wind and biomass energy, are employed in the hope of preventing the impending global energy crisis (Wang, Chem and Huang 2010). Microbial Fuel Cells (MFCs) which...
    1,230 Words | 5 Pages
  • electrochem lab - 786 Words
    Jasmine Nassif Chemistry 102 Dr. Ogar August 1, 2013 Electrochemistry Part A: Voltaic Cells- use a voltmeter to measure the cell potential (E˚cell) between various 1.0 M aqueous reactant solutions, then using balanced half-cell rxns, calculate theoretical cell potential values and compare to experimental. Part B: Concentration Cell: Measure the cell potential of CuSO4 (aq) of two differing Molarities – one concentrated and one dilute- then use the Nernst equation to determine the...
    786 Words | 3 Pages
  • Experiments to Calculate the Value of the Formation Constant of Tetraamminecopper
    Experiments #7A & 7B 7A. Electrochemical Cells 7B. Formation of a Complex Ion Chem 102 Section 3095 Grace H. Kim Dec. 15, 2011 Abstract Two experiments were conducted to figure out the value of the formation constant of tetraamminecopper(II), Kf, with different methods and which experimental method produces more accurate result. One was electrochemistry using a Daniel cell and the other one was spectrometry by estimating concentration of complex solution using a...
    2,393 Words | 9 Pages
  • Rapid Regeneration of Chelated Iron Desulfurization Solution
    CATALYSIS, KINETICS AND REACTION ENGINEERING Chinese Journal of Chemical Engineering, 22(2) 136—140 (2014) DOI: 10.1016/S1004-9541(14)60005-7 Rapid Regeneration of Chelated Iron Desulfurization Solution Using Electrochemical Reactor with Rotating Cylindrical Electrodes* YU Yong (于永), LIU Youzhi (刘有智)** and QI Guisheng (祁贵生) Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, North University of China, Taiyuan 030051, China Abstract A new...
    3,824 Words | 17 Pages
  • DC POLAROGRAPHY - 1841 Words
     D. C. Polarography * Introduction: - Polarography is a particular case of general electro analytical technique known as voltametry. These methods are used to study the decomposition and quantitative analysis of solution. Principle: - It is a rapid and accurate technique in which electrolysis of experimental solution is carried out by using one electrode of comparatively large surface area (i.e. non-polarisable electrode) and the other electrode having a very small area...
    1,841 Words | 7 Pages
  • Determining Standard Reduction Potentials, Equilibrium Constants and Investigating a Lead-Acid Electrolytic Cell
    Determining Standard Reduction Potentials, Equilibrium Constants and Investigating a Lead-Acid Electrolytic Cell Purpose Experimental Methods All procedures were followed according to the lab manual (experiment 10 – Electrochemistry Laboratory). Data and Observations Part A: Grams of FeSO4 used: 0.759 Voltage during voltmeter and battery check: 9.23V Table 1. Electrochemical Cells Data Part B: Table 2. Lead-Acid Battery Results and Calculations In order to...
    1,344 Words | 4 Pages
  • Redox potential - 1098 Words
     Redox potential – CV Acetonitrile Adjusted sensitivity Each ;line represents diff scan rates all been overlayed on one digarm Scan rates ranged from 0 .1 s-1 to 1 Peak due to iodide oxidation is read from +peak to – peak bottom line. Iodide to triiodide Glycol Didn’t work Using equation ip = 2.69 ×105 n3/2 A D1/2 C ν1/2 compare to linear equation y = mx+c y = peak current x = V1/2 c = zero Therefore m is = everything else C = concentration 0.05 M ethylene glycol...
    1,098 Words | 5 Pages
  • vher, - 866 Words
    9 Oxidation and reduction A complete set of fully worked solutions is contained in the Chemistry for WA 2 Solutions Manual. Review Exercise 9.1 1 a Redox reaction b Not a redox reaction c Redox reaction d Redox reaction 2 a Oxidation: Fe(s)  Fe2+(aq) + 2e– Reduction: Ag+(aq) + e– Ag(s) Overall equation: Fe(s) + 2Ag+(aq)  Fe2+(aq) + 2Ag(s) b Oxidation: Mg(s)  Mg2+(aq) + 2e– Reduction: Cu2+(aq) + 2e– Cu(s) Overall equation: Mg(s) + Cu2+(aq)  Mg2+(aq) + Cu(s) c No...
    866 Words | 4 Pages
  • chem notes - 4395 Words
    Identification and Production of Materials ================================ Ethene, Polymers and Ethanol ================================ Catalytic Cracking Oil refineries need to balance their outputs of various products (petrol, diesel, fuel oil, etc.) to match the demands of the marketplace. Catalytic cracking is the process in which high molecular weight (high boiling point) fractions from crude oil are broken into lower molecular weight (lower boiling point) substances in order to...
    4,395 Words | 16 Pages
  • Conductivity of Electrolyte Solutions - 4087 Words
    Experiment 4: Conductivity of electrolyte solutions (Dated: October 29, 2009) I. INTRODUCTION Pure water does not conduct electricity, but any solvated ionic species would contribute to conduction of electricity. An ionically conducting solution is called an electrolyte solution and the compound, which produces the ions as it dissolves, is called an electrolyte. A strong electrolyte is a compound that will completely dissociate into ions in water. Correspondingly, a weak electrolyte...
    4,087 Words | 14 Pages
  • Pem Electrolysis - 4129 Words
    ARTICLE IN PRESS Energy 32 (2007) 431–436 www.elsevier.com/locate/energy Hydrogen production by advanced proton exchange membrane (PEM) water electrolysers—Reduced energy consumption by improved electrocatalysis A. MarshallÃ,1, B. Børresen, G. Hagen{, M. Tsypkin, R. Tunold Department of Materials Technology, Group of Electrochemistry, NTNU, 7491 Trondheim, Norway Received 14 October 2005 Abstract Proton exchange membrane (PEM) water electrolysis systems offers several advantages over...
    4,129 Words | 14 Pages
  • Chem Ia Cell Potential
    Investigating in the effect of ion concentration in electrolytes on the potential difference in a voltaic cell Introduction When two electrodes made of different metals are connected together in a voltaic cell, the chemical energy present is converted into electrical energy and an electromotive force is generated. This force, called the electrode potential, is normally measured under standard conditions, which is 298K, 1 mol dm-3 solution for the electrolyte. However when one measures the...
    415 Words | 3 Pages
  • Chemistry Galvanic Cell - 1646 Words
    Stage 2 Chemistry Investigation Folio: Practical – Galvanic Cell Name: YY Names of Partner: ZZ Part A Investigation Design Proposal: Purpose of Experiment: To determine the effect of concentration of reactants on the current produced by a galvanic cell. Hypothesis: The greater the concentration of solution in the two half cells reacting with the two metals to produce current, the greater the flow of current will be produced from the galvanic cell....
    1,646 Words | 10 Pages
  • Theatre 100 - 914 Words
    Brianna Cooper Brandon Boucher 2/16/12 Purpose: To understand how both voltaic and electrolytic cells function. Procedure: Refer to pages 34-36 of laboratory notebook for experimental details Results and Discussion: Voltaic Cell Reactions | | | Overall Cell Reaction | Observed Voltage | Theoretical Voltage | Cu2+(aq)+Zn(s) Cu(s)+Zn2+(aq) | 0.947 V | 1.10 V | Cu2+(aq)+Sn(s)Cu(s)+Sn2+(aq) | 0.571 V | 0.473 V | Cu2+(aq)+Fe(s) Cu(s)+Fe2+(aq) | 0.512 V | 0.777 V | Cu2+(aq)+Mg(s)...
    914 Words | 3 Pages
  • Chem 120 Exam Sample
    CHEM 120 (Fall 2011) 1. Test #1 (Version 001) Page 2 of 8 (0.5 marks) Elemental mercury, Hg(l), has a density of 13.6 g mL−1 at 25°C. What is the volume of 4.25 grams of Hg(l)? A. B. C. D. E. 0.313 mL 3.20 mL 17.8 mL 57.8 mL none of the above 2. (0.5 marks) What is the mass of 0.45 mol S? Choose the closest value. A. B. C. D. E. 9.7 g 0.45 g 14 g 0.049 g 15 g 3. (0.5 marks) Balance the following equation using the smallest whole number coefficients. C5H10O5 + O2 → H2O + CO2...
    1,013 Words | 4 Pages
  • Sofc - 3741 Words
    Acta mater. 48 (2000) 4709–4714 www.elsevier.com/locate/actamat GADOLINIA-DOPED CERIA AND YTTRIA STABILIZED ZIRCONIA INTERFACES: REGARDING THEIR APPLICATION FOR SOFC TECHNOLOGY A. TSOGA1*, A. GUPTA1, A. NAOUMIDIS1 and P. NIKOLOPOULOS2 Institut fur Werkstoffe und Verfahren der Energietechnik (IWV1), Forschungszentrum Julich, D-52425 ¨ ¨ Julich, Germany and 2Chemical Engineering Department, University of Patras, GR 265 00 Patras, Greece ¨ 1 Abstract—For solid oxide fuel cells (SOFCs)...
    3,741 Words | 12 Pages
  • Chemistry Unit 3 - 2349 Words
    UNIT 5 – ELECTROCHEMISTRY Chapter 9 – Electric Cells 9.1 – Oxidation and Reduction * The term reduction came to be associated with producing metals from their compounds. * Ex. Fe2O3(s) + 3CO(g) 2Fe(s) + 3CO2 * Another substance, called a reducing agent causes or promotes the reduction of a metal compound to an elemental metal. In this example, it is CO. * Corrosion, including the rusting of metals, is now...
    2,349 Words | 11 Pages
  • Chemical Effects of Electric Currents
    CHEMICAL EFFECTS OF ELECTRIC CURRENT Conductivity of Liquid Electrolysis Electroplating www.excellup.com ©2009 send your queries to enquiry@excellup.com Finish Line & Beyond The materials, which allow electric current to pass through them, are good conductors of electricity. On the other hand, materials, which do not allow electric current to pass through them easily, are poor conductors of electricity. You know that metals such as copper and aluminum conduct electricity whereas...
    953 Words | 3 Pages
  • Chemistry - 1840 Words
    Q. 1. During the electrolysis of molten lead bromide, which of the following takes place : A : Bromine is released at the cathode. B: Lead is deposited at the anode. C : Bromine ions gain electrons. D: Lead is deposited at the cathode. Ans : - D. Q. 2. Here is an electrode reaction : Cu → Cu2+ + 2e-. [i.e. Cu- 2e- →Cu2+]. At which electrode(anode or cathode) would such a reaction take place. Is this an example of oxidation or reduction. Ans : - At anode. Oxidation. Q. 3. A solution...
    1,840 Words | 6 Pages
  • Strontium Manganese Dioxide - 2411 Words
    Strontium Manganese Oxide Introduction The ternary inter oxide SrMnO3 was first characterized by XRD by Negas and Roth []. This perovskite type inter oxide crystallizes in the hexagonal form with the space group P63/mmC(194). This inter oxide is of considerable interest to materials scientists owing to its ability to accommodate a high degree of anion vacancies, crystal structure and its high Neel Temperature (TN). It also exhibits polymorphism with two different cubic and hexagonal...
    2,411 Words | 7 Pages
  • Electrolysis Scientific Experiment - 5889 Words
    6/15/2012 Somerset College | Charlese Conolly | Science 2012 | Could electrolysis be used to determine the comparative reactivity of metals? | Science 2012 | Could electrolysis be used to determine the comparative reactivity of metals? | Contents COULD ELECTROLYSIS BE USED TO DETERMINE THE COMPARATIVE REACTIVITY OF METALS? 2 BACKGROUND 2 Electrolytic and Galvanic corrosion: 3 AIM 5 HYPOTHESIS 6 VARIABLES 6 APPARTATUS 7 DIAGRAM 8 METHOD / PROCEDURE 8 RESULTS 11...
    5,889 Words | 19 Pages
  • Reference Electrode - 3647 Words
    A Reference electrode is an electrode which has a stable and well-known electrode potential. The high stability of the electrode potential is usually reached by employing a redox system with constant (buffered or saturated) concentrations of each participants of the redox reaction.[1] There are many ways reference electrodes are used. The simplest is when the reference electrode is used as a half cell to build an electrochemical cell. This allows the potential of the other half cell to be...
    3,647 Words | 12 Pages
  • Potentiometry - 1037 Words
    Abstract: The purpose of this lab was to use potentiometry to measure the concentration of a specific chemical species in a solution. This was conducted in 2 stages. The first stage involved making a solution of potassium iodide. The potassium iodide was then diluted to several different concentrations that were ran in potentiometer to find the mV of each solution which would then be used to find the PH of the solution. After analyzing a sample of each concentration an unknown solution was...
    1,037 Words | 4 Pages
  • Corrosion - 2876 Words
    Chemistry assignment Introduction: Throughout modern day society metals are constantly used, in fact mankind has been heavily dependent on metals for the last several hundred years. But the science behind metals has only been discovered in recent years and has now become known to people that we simply could not live without them. Metals make up around 80% of the elements (currently discovered). They are used in everyday items that society depends on, such as: cars, re-bars for building,...
    2,876 Words | 9 Pages
  • Global SOFC Market - 392 Words
    Global SOFC Market 2015-2019 A Solid Oxide Fuel Cell (SOFC) is a device that generates electricity through an electrochemical process that involves oxidation of electrolytes when placed between two electrodes - anode and cathode. Fuel cells are generally categorized based on the type of electrolyte material used in them; an SOFC uses a solid oxide or ceramic electrolyte. Some of the advantages of an SOFC include low cost, low emissions, long-term stability, high efficiency, and fuel...
    392 Words | 3 Pages
  • RACE TO RUST - 423 Words
    Introduction and Hypothesis: Rust is a reddish or yellowish-brown flaky coating of iron oxide that is formed on iron or steel by oxidation, especially in the presence of moisture. The rusting process is electrochemical, meaning it forms from a chemical reaction which takes place in a solution where there is an electron transfer between the electrode and the electrolyte or species in solution. In the case of rusting, the transfer of electrons from iron to oxygen begins the electrochemical...
    423 Words | 2 Pages
  • Corrosio Eei - 366 Words
    This assignment entailed the task of investigation into the a) Conditions under which corrosion is accelerated, and b) Methods of preventing corrosion. Two experiments were implemented to answer these questions and hence reach a definate conclusion.First off let's look at the background of corrosion and the way in which it occurs.The first hypothesis to answer was, 'What affect does water temperature have on the rate of corrosion of iron in sea water?' The assumed answer was that ' As...
    366 Words | 1 Page
  • Molar Conductivity Experiment - 1006 Words
    EXPERIMENT 5 Title: Conductivity of Strong Electrolytes Date: 16 August 2005 Objectives: ▪ To determine the relationship between the concentration and conductivity of various electrolytes ▪ To determine the conductivity at infinite dilution ▪ To determine the activity coefficients Theory: The resistance, R of a conductor with a similar cross section is proportional to the length (l) and inverse to the cross section area(A), therefore; [pic]...
    1,006 Words | 5 Pages
  • Electro Chemistry Study Notes
    Chemistry Exam Revision - Redox & Electrochemical Series - Define oxidation and reduction in term of loss and gain of oxygen; loss and gain of electrons and change in oxidation state (number). • Oxidation is the loss of electrons; an increase in oxidation state or a gain in oxygen by a molecule, atom, or ion. • Reduction is the gain of electrons; a decrease in oxidation state or a loss of oxygen by a molecule, atom, or ion. • OIL RIG (Oxidation is Loss, Reduction is Gain) - Rules for...
    1,006 Words | 4 Pages
  • Electochemical - 1918 Words
    Electrochemical Cells Tutorial sheet 1. Calculate the single electrode potential for copper metal in contact with 0.10M Cu+2 solution. E˚ for copper electrode is 0.34V. 2. Calculate EMF of the cell involving the reaction : Mg(s)+ 2Ag+(aq) → Mg+2(aq) + 2Ag(s) Given; [Mg+2] = 0.130M and [Ag+] = 1.0x10-4M & E˚Ag+/Ag = 0.80V and E˚Mg+2/Mg = -2.37V....
    1,918 Words | 6 Pages
  • chem - 457 Words
    S E C T I O N B Answer at least TWO (2) Questions from this Section 4. (a) (i) What is an ideal gas? (2 marks) (ii) Write the ideal gas equation and give the units used for each term in the equation when R = 0.0821L-atm/mol-K. (3 marks) (b) Why was this equation modified and what is the modified form of the equation? (5 marks) (c) Calculate, using the modified equation, the pressure at which one mole of chlorine gas will occupy 22400 cm3 at 0oC. (For chlorine, a = 6.49 L2-atm/mol and b =...
    457 Words | 2 Pages
  • Cp for Water Facility - 1118 Words
    _____________________________CORRTECH CATHODIC PROTECTION FOR PORT FACILITIES _____________________________CORRTECH Contents • • • • • • What causes corrosion What is CP and how does it work? Galvanic vs. impressed current Electrolytes (or where can I use CP) Marine applications Condition assessments _____________________________CORRTECH What is Corrosion? Corrosion is defined as the degradation of a material due to a reaction with it’s environment. Metals require energy to...
    1,118 Words | 9 Pages
  • Electrochemical Cells - 615 Words
    Chemistry Essay: Electrochemical Cells By John Williams An electrochemical cell is s cell in which chemical energy in a redox reaction is converted to electrical energy. It consists of two half cells connected internally by a salt bridge and externally by wires. A hydrogen half cell is the standard electrode and all comparisons of the other half cells are made against this half cell which has an E( value of zero volts. The E( values of other half cells are obtained by measuring the total emf...
    615 Words | 2 Pages
  • Chem 17 3rd Le Reviewer
    CHEM 17 Third Exam Reviewer 1. The non-spontaneous formation of Br2 from Br- was carried out by electrolyzing 1.0 M KBr solution between two graphite electrodes. Electrolysis was done for 0.106 hours using 1.15 mA of current supplied by an external source. The voltmeter reading was found to be 1.087 V. a. Write the balanced cathode reaction. b. Write the balanced anode reaction. c. Write the cell notation for the electrolytic cell. d. Which electrode has a...
    454 Words | 2 Pages
  • Variation of Conductance with Temperature in Electrolytes
    Apparatus Glass beaker, CuSO4 solution, Cu electrodes, ZnSO4 solution, Zn electrodes, rheostat, battery eliminator, water, burner, thermometer, flask, ammeter, voltmeter Important Terms  Conductance: The property of ease of flow of electric current through a body is called conductance.  Resistance: The obstacle offered to the flow of electric current is called resistance.  Electrolysis: The operation in which electricity causes a chemical reaction is called electrolysis. ...
    1,143 Words | 6 Pages
  • 120632882 project on factors affecting
     NEW DIGAMBER PUBLIC SCHOOL Session :- 2012-13 subject :- Factors affecting internal resistance of a cell Made by :- Saurabh godha (xii - B) submitted to :- Mr. Harshad shevgaonkar Certificate NAME : Saurabh Godha CLASS : XII - B ROLL NO. : 19 INSTITUTION : New Digamber Public School This is certified to be the bonafide work of the student in the PHYSICS INVESTIGATORY PROJECT during the year 2012 / 2013 ....
    1,221 Words | 8 Pages
  • Chemistry Internal Assessment - 1033 Words
    Chemistry Title: voltaic cell experiment a voltaic cell is a device made from connecting two different metals together and immersing the combined piece into some sort of solution that creates conductive atmosphere , the general purpose of a voltaic cell is to convert the chemical reaction between the metals and the solution into an electrical charge , Hypothesis: the voltage produced by magnesium and cupper = the sum of the voltage produced by magnasium and iron ; and iron and cupper...
    1,033 Words | 4 Pages
  • how to save the world from pollution
    HS1103- Engineering chemistry - I KINGS COLLEGE OF ENGINEERING Department of Science and Humanities Sub. Code: HS1103 Sem/Year: I / I Sub. Name: Engg.Chemistry-I UNIT – I – WATER TREATMENT PROCESS: PART – A ( 2 Marks) 1. Define hardness of water. 2. Distinguish between carbonate hardness and noncarbonate hardness. 3. Draw the structure of EDTA. What happens when EDTA is added to hard water? 4. Define alkalinity. 5. Why is water softened before using in boiler? 6. What is meant...
    1,258 Words | 8 Pages
  • Variation Of Conductance With Temperatu
     Variation of Conductance with Temperature in Electrolytes Index 1.Certificate.................................................................3 2.Acknowledgements.....................................................4 3.Aim..........................................................................5 4.Apparatus..................................................................6 5.Important Terms........................................................7...
    977 Words | 4 Pages
  • Electroplating - 1648 Words
    Electroplating Charit Koram Grade 12 INTRODUCTION Electroplating is the application of a metal coating to a metallic or other conducting surface by an electrochemical process. The article to be plated (the work) is made the cathode (negative electrode) of an electrolysis cell through which a direct electric current is passes. The article is immersed in an aqueous solution (the bath) containing the required metal in an oxidized form, either as an aquated cation or as a complex ion. The...
    1,648 Words | 8 Pages
  • Galvanic Cells - 283 Words
    Galvanic Cells Investigation Equipment: - 2 x 150 ml beaker - sand paper - Voltmeter - Copper electrode - Copper Nitrate - M(1), M(2), M(3) - Electrolyte couples matching the previous metals - two cables connecting the electrodes with the voltmeter - Paper towel - Wash bottle - Sodium Chloride Method: 1. Clean the copper, M(1), M(2) and M(3) before starting the experiment. Sand with a fine grade sand paper to take off the outside coating. 2. Add 100 ml of one matching...
    283 Words | 2 Pages
  • Chemistry - Factors Affecting Electrochemical Cells - Design
    Experimental Report: Oxidation and Reduction Factors Affecting Electrochemical Cells Research Question: How do the changeable electrodes of different reactivity affect the energy in Volts measured by a Voltmeter while the Solution and the Salt Bridge stay constant for every single trial by the same amount in each beaker? Background Theory: The conductance of an electrolyte depends upon the number of ions present in the solution. Therefore, the greater the number of ions in the solution...
    284 Words | 2 Pages
  • PREPARATION AND CHARACTERIZATION OF NANO-SIZED Pd- PdCu/C CATALYSTS AND THEIR ELECTRO-ACTIVITY TOWARD ALCOHOL OXIDATION
    PREPARATION AND CHARACTERIZATION OF NANO-SIZED Pd- PdCu/C CATALYSTS AND THEIR ELECTRO-ACTIVITY TOWARD ALCOHOL OXIDATION Xuan Nam VO, Pham Anh Vu HO, Thi Giang Huong NGUYEN, Thi Phuong Thoa NGUYEN, Van Man TRAN and Thanh Thien CO* University of Science, VNU-Ho Chi Minh City. *E-mail: ctthien@hcmus.edu.vn Polyvinylpyrrolidone stabilized palladium nanoparticles have been prepared by alcohol reduction in ethanol and ethylene glycol with the addition of a hydrochloric acid catalyst....
    1,761 Words | 6 Pages
  • Experiment to Investigate the Effect of Concentration on Rate of Reaction
    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...
    1,104 Words | 5 Pages
  • Faggot - 2078 Words
    Research Question How does changing the concentration of Zn2+(aq) ions (0.2, 0.4, 0.6, 0.8, 1.0) (moldm-3) affect the voltage (V) of the voltaic cell consisting of Zinc and Copper half cells? Aim To see the relationship between increasing the concentration of Zinc ions and the voltage that is obtained from voltaic cell. The concentration of zinc ions can be directly manipulated by changing the concentration of a zinc sulphate aqueous solution, and the voltage will be measured using an...
    2,078 Words | 7 Pages
  • Chemistry Solid State Cells
    Solid State Cell Chemistries and Designs Sehee Lee Department of Mechanical Engineering University of Colorado at Boulder Crash‐Safe Energy Storage Systems For Electric Vehicles Workshop Denver, CO November 12 & 13, 2012 1 Outline History Basic theory (solid state electrolytes) SOA solid state batteries All-solid-state lithium secondary batteries Solid Power, Inc. 2 Why solid state battery? ? Advantages No flammable liquid electrolyte  Ultimate safety  No thermal runaway...
    1,246 Words | 8 Pages
  • Engineering Materials Week 12
    Engineering Materials Week 12 17.7 An electrochemical cell is constructed such that on one side a pure Zn electrode is I contact with a solution containing ions at a concentration of M. The other cell half consists of a pure Pb electrode immersed in a solution of ions that has a concentration of M. At what temperature will the potential between the two electrodes be +0.568 V? 17.15 (a) Cite the major differences between activation and concentration polarizations. Activation polarization is the...
    321 Words | 2 Pages
  • ang sa akin - 1401 Words
    Abstract Battery or more precisely, a cell – is a device in which reaction between two substances can be made to occur in such a way that some of the chemical energy is converted to useful electricity. Since its invention, the battery has become the most common power source for many households and industrial applications. There are so many ways to construct a battery as well as ways to control its generated output. This Vinegar Battery is a battery that is constructed out from simple...
    1,401 Words | 5 Pages
  • Lab Report 32 - 563 Words
    Chemistry lab report Experiment 32 Voltaic Cell Measurements Dinmukhamed Yeraly Partner Azamat Bashabayev General Chemistry II lab Instructor Rostislav Bukasov Nazarbayev University Introduction Most of the chemical reactions can be classified as redox reactions, which include two half reactions, oxidation and reduction respectively. To measure the tendency for a readox reaction to occur, special apparatus called voltaic cell can be used. It is made by connecting a voltmeter...
    563 Words | 2 Pages
  • Volcaic Cell Lab - 2207 Words
    EXPERIMENT 23 ELECTROCHEMISTRY: VOLTAIC CELLS INTRODUCTION This experiment deals with cells in which spontaneous oxidation-reduction reactions can be used to produce electrical energy. The reactants in the oxidation-reduction reaction are separated physically, so there cannot be a direct electron transfer from one reactant to the other as there would be if the reactants were in physical contact. Instead, the two reactants are joined by a wire through which electrons travel from one reactant to...
    2,207 Words | 12 Pages
  • Electrochemical Cells Lab - 1616 Words
    Determination of an Electrochemical Series In electrochemistry, a voltaic cell is a specially prepared system in which an oxidation-reduction reaction occurs spontaneously. This spontaneous reaction produces an easily measured electrical potential which has a positive value. Voltaic cells have a variety of uses and you commonly refer to them as a “battery”. Half-cells are normally produced by placing a piece of metal into a solution containing a cation of the metal (e.g., Cu metal in a solution...
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  • Ise Determination of Fluoride Content in Various Substances
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