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 reaction
Premium Electrochemistry
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.
Premium Electrochemistry Electrolysis Anode
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 the
Premium Electrochemistry
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 in
Premium Electrochemistry Oxidizing agent
half-cell‚ electrode potential‚ oxidation-reduction reactions‚ standard electrode potential Introduction Chemical reactions can be used to produce electricity and electricity can be used to cause chemical reactions. The practical applications of electrochemistry are countless‚ ranging from batteries and fuel cells as electric power sources‚ to the manufacture of key chemicals‚ to the refining of metals‚ and to the methods of controlling corrosion. The objective of this experiment is to measure the
Premium Electrochemistry
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 reactions are reacting upon metal surfaces‚ or electrodes. An oxidation-reduction equilibrium is established between the metal and the substances in solution. When electrodes are immersed in a solution containing ions of the same metal
Premium Electrochemistry
24/05/2013 Commerce CHM 1046 General Chemistry II Dr. Michael Blaber Electrochemistry Commercial Voltaic Cells Voltaic cells provide a convenient‚ safe and portable supply of electrical energy. The Industrial Revolution marked the development of heat engines‚ and other devices‚ that utilized the energy released from combustion reactions in the form of heat The Digital Age (Electronic Revolution?) revolves around devices that require energy in the form of electrical energy. Such devices
Premium Electric vehicle Internal combustion engine Rechargeable battery
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 or
Premium Electrochemistry
Pre – Lab Questions 1. A decomposition reaction may be defined as any reaction in which one reactant‚ a compound‚ breaks down to give two or more products. Write the balanced chemical equation for the decomposition of water to its elements. 2H2O(l) 2H2(g) + O2(g) 2. (a) Assign oxidation states to the hydrogen and oxygen atoms in each substance in the above chemical equation. The oxidation state of H2(g) and O2(g) is zero‚ because they are in their normal state. (b) Based
Free Hydrogen Oxygen Electrochemistry
EXPERIMENT V POTENTIOMETRIC TITRATION These files are in Adobe Acrobat format‚ if you are using Netscape Navigator or Internet Explorer and have Adobe Acrobat Reader installed (If you do not; Acrobat Reader can be downloaded for free from Adobe) these files should open directly in your browser. INTRODUCTION Many Acid-Base titrations are difficult to accomplish using a visual indicator for one of several reasons. Perhaps the analyst is color-blind to a particular indicator color
Premium PH