PPT-Electrolysis (I)

LQ What happens at the electrodes Learning outcomes I can describe electrolysis as the decomposition of an electrolyte with an electric current Grade B I can describe the changes at the electrodes during electrolysis Grade A. The purpose of electrolysis is to split up ionic compounds using electricity to produce useful products.. Electrolysis is used a lot in industry and is a multi-billion pound industry. It is used to produce all of the Copper, Aluminium, Chlorine and Caustic Soda (sodium hydroxide) that we use today as well as to produce gold and silver plated jewellery and chrome-plated taps and bicycle parts. The electrolysis of aqueous solutions. Aqueous. solutions are solutions in . water. .. Water is a very weak electrolyte. It ionises very slightly to give hydrogen ions and hydroxide ions.. H. 2. O. (l). Pg. 658 - 660. Let’s talk about the lab…. In lab the reactions were spontaneous!. The solutions were arranged so that the electrons would move through the wires. Voltaic cells involving spontaneous reactions are typically used to run motors and perform other useful work. Electrolytic Cells. :. When a non-spontaneous . redox. reaction is made to occur by putting electrical energy into the system.. The battery (energy source) acts as a “pump” pushing electrons into the cathode and removing electrons from the anode.. Medical Laser. What is Laser Hair Removal?. It’s a method of permanent hair reduction.. It can be done on any area of the body.. It works best on hair that is brown or black. . Electrolysis. is an option for white, gray, or very blond hair.. Mr. Chapman. Electrolysis. Think of . electrolysis. . and . electrolytic cells. as the . opposite . of . electrochemical cells. .. In . electrochemical cells. , a spontaneous REDOX reaction . is used to create . as. an . energy. . carrier. : . production. . and. . utilisation. Dr.-Ing. . R. oland . Hamelmann. D-23611 Bad Schwartau. Dr.-Ing. Roland . Hamelmann. TU Clausthal, . chemical. . engineering. (. Electrolytic Cells. REVERSE spontaneous reactions through the input of . electricity . A non spontaneous reaction that is forced to occur with the input . of energy . Electrolysis of Water. in acidic solution . C3Revision. Qualitative Analysis is where you find out what type of substance you have present.. Quantitative Analysis is when you deduce the amount of unknown sample you have.. Water samples contain . Baseline (Flightpath D): State that aluminium can be extracted from aluminium oxide using electrolysis. Write a word equation to describe the electrolysis of aluminium oxide. .. Further (Flightpath C&B): Describe the electrolysis of aluminium oxide. Explain why electrolysis is an expensive metal extraction method and illustrate this with the extraction of aluminium.. Electrolysis . Process by which an electric current is passed through a substance to cause a chemical change.. The chemical change is one in which the substance loses or gains an electron.. Electrolysis. Kristopher A. Lee. 1. Why Water Electrolysis?. Electrolysis is a straightforward way to make oxygen on Mars or the Moon if you can obtain water.. 2. Sabatier: CO. 2. + 4H. 2. CH. 4. +. 2H. Monday, 05 October 2020. CHAPTER 5: CHEMICAL CHANGES. Do Now: . These are the answers… what could the questions be?. Electrolysis. Anode. Cation. Electrolyte. Electrode. Spec 5.4.3.4. PROGRESS INDICATORS. What is the positive electrode called?. What is the negative electrode called?. Label a diagram showing the electrolysis of molten copper bromide (CuBr. 2. ). ELECTROLYTIC PROCESSES. What does OILRIG stand for?.