An electrolyte is a substance which conducts an electric current in molten state or aqueous solution, and is decomposed by electricity. It was left to daveys former assistant, michael faraday, to show that there is a quantitative relation between the amount of electric charge and the quantity of electrolysis. The charge on 1 mol of electrons is 96,500 coulombs. The apparatus used for electrolysis is called an electrolytic cell. Find powerpoint presentations and slides using the power of, find free presentations research about aluminum electrolysis ppt. View and download powerpoint presentations on aluminum electrolysis ppt. One common use of an electrolytic cell is the electrolysis of molten nacl, which results in the production of sodium metal liquid and. Ppt electrolysis powerpoint presentation, free download id. Our notes are easytofollow, handwritten chemistry pdf notes that combine your book and chemistry notes into one, simple, easytounderstand format. Ppt electrochemistry powerpoint presentation free to. Marc rodriguez, chemistrybiology teacher at saint nicholas school. Explain the process of electrolysis and its uses ppt video online.
Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Electrochemistry pdf free pdf download, notes, problems. With important definitions electrolysis is the chemical deposition of a compound into its constituent elements brought about by a flow of electric current. Electrolysis the splitting lysing of a substance or decomposing by forcing a current through a cell to produce a chemical change for which the cell potential is. Oh, yeah, also stainless steel for ordinary people. Gcse science chemistry 91 calculating moles of an element duration. It is a chemical process where a substance in its molten state or in an aqueous solution is decomposed by the passage of electric current. In order to convert an oxide to a pure metal, it must be reduced through a nonspontaneous process. The primary energy inputs to be considered are the energy requirements for building and running an electrical generating facility. A compound called cryolite is used to lower the melting point of.
Electrolysis is an important chemical process that is used in many different industries. Water electrolysis is a wellestablished technology that has been used for almost one century for miscellaneous application in the industry food industry, power plants, metallurgy, etc. Electrolysis 1 electrolysis 2 terms used in electrolysis. The stoichiometry of this reaction shows that there are 2 moles of h 2 gas formed for every 1 mole of o 2 gas.
Chemistry powerpoint presentations free to download. Selina concise chemistry solution for icse class 10 chapter 6 electrolysis electrolysis is actually an interesting chapter that is found in selina textbook for class 10 chemistry. Copper electrolysis handson activity instructional guide. Direct current is passed through the compound the compound can be in molten or aqueous state. The chemical change is one in which the substance loses or gains an electron oxidation or reduction. An electrolytic cell is an apparatus for carrying out. Jul 12, 2016 electrolysis is electrical current flow through a liquid which causes chemical changes. Nowadays, it is also considered as a key process that can be used for the production of highpurity hydrogen from water and renewable energy sources. Electrolysis is the decomposition of an electrolyte in molten state or aqueous solution by electricity. For example, most metals occur as metal oxides in the earths crust. Electrolysis, process by which electric current is passed through a substance to effect a chemical change.
Gcse electrolysis revision powerpoint presentation teaching. Water electrolysis an overview sciencedirect topics. May 05, 2016 powerpoint presentation covering the differences between electrolytes and nonelectrolytes, the reasons molten and aqueous ionic compounds and graphite electrodes conduct, the electrolysis of molten leadii bromide, the electrolysis of solutions, and electrolysis calculations. State that electrolysis is the chemical relate the products of electrolysis to effect of electricity on ionic the electrolyte and electrodes compounds, causing them to break up used. Less voltage than this will give essentially no current, no electrolysis. Faradays laws can be summarized by m is the mass of the substance liberated at an electrode in grams q is the total electric charge passed through the substance f 96,485 c mol. In this lesson, learn about how electrolysis works and a few applications of electrolysis. Electrolysis is electrical current flow through a liquid which causes chemical changes. Its chemical name is aluminium oxide al2o3 it has to be melted so that the ions are free to move. Mar 07, 2014 requirements of electrolysis 080314 the following figure shows the electrolyte, battery power supply and electrodes cathode and anode required for electrolysis.
So if we started our zinc electrode, solid zinc turns into zinc two plus ions. Matter and energy a free powerpoint ppt presentation displayed as a flash slide show on id. The chemical reaction of electrolysis occurs when an electric current is passed through a solution containing ions ions are charged atoms, they have more or less electrons than protons which causes an imbalance, the overall charge can be negative or. Free chemistry powerpoint presentations great for ks1 ks2 ks3 ks4 and post 16 a level lessonplans, k12 and more. Of course, you use an electrolyte like h2so4 or naoh with electrodes that will not corrode. Electrolysis is the process of decomposing breaking down an ionic substance, called an electrolyte, into simpler substances using electricity. In a redox reaction, there is a change in the oxidation state of one or more elements. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Gcse science chemistry 91 calculating moles of an element. Apr 06, 2016 home o level electrolysis what is electrolysis. Selina concise chemistry solution for icse class 10 chapter 6.
Electrolysis of a solution of sulfuric acid or of a salt, such as nano 3, results in the decomposition of water at both electrodes. The simplest example of an electrochemical reaction is the aa. Gcse electrolysis revision powerpoint presentation. We have both general chemistry notes and organic chemistry notes. The chapter deals with understanding what is electrolysis and students will learn how the process actually works based on different situations or perspectives. Chemistry notes download handwritten pdf chemistry notes. Identify the reaction at the anode, reaction at the cathode, the overall reaction, and the approximate potential required for the electrolysis of the following molten salts. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Requirements of electrolysis 080314 the following figure shows the electrolyte, battery power supply and electrodes cathode and anode required for electrolysis. Igcse chemistry electrolysis free download as powerpoint presentation. Describes the basics of electrolysis and how its used to extract aluminium.
Electrolysis diploma courses pimpri chinchwad pune. Hydrogen will appear at the cathode and oxygen will appear at the anode. The amount of substance produced at an electrode by electrolysis depends on the quantity of charge passed through the cell. Reduction of 1 mol of sodium ions requires 1 mol of electrons to pass through the system. Chemistry from electricity powerpoint presentation free to download id. Powerpoint presentation covering the differences between electrolytes and nonelectrolytes, the reasons molten and aqueous ionic compounds and graphite electrodes conduct, the electrolysis of molten leadii bromide, the electrolysis of solutions, and electrolysis calculations. So a voltaic cell uses a spontaneous redox reaction to produce an electric current. Download the copper electrolysis handson instructional guide pdf andor presentation powerpoint for a complete set of images demonstrating materialssetup.
Electrolysis a process where electrical energy is transformed into chemical energy. Ppt electrolysis powerpoint presentation free to download. Copper chloride is split with an electrical current to produce copper and chlorine gas. A complete lessons material for teaching chemistry students about electrolysis of brine salt water. The movement of electrons from one element to another is called a redox reaction. Assume standard states and that the standard reduction potentials in appendix l are the same as those at each of the melting points. Electrolysis ppt free download as powerpoint presentation. A compound that allows electric current to pass through itself, when either in a molten state or in an aqueous solution, is called an electrolyte. Mar 30, 2011 describes the basics of electrolysis and how its used to extract aluminium. Ppt electrolysis powerpoint presentation free to download id. Electrolysis if you melt or dissolve an ionic compound such as nacl or cucl2, then the ions become free to move around and carry electrical current. Hoffman apparatus is used to demonstrate the electrolysis of water, alternatively, a power source and electrodes can show the same demonstration in a petri dish.