PDF-92.Electrolysing copper(II)TopicTimingTeaching tips1.Cathode (negative

238Classic chemistry experiments 1Set up the circuit shown in the diagram Do not switch on the power supply until2Switch on and leave for about 5 min Watch what happens and record your results3E. 2Classic chemistry experiments 1.Mix about 5 g of the mixture with 50 cm2.Filter the mixture into a conical flask and pour the filtrate into an evaporating basin.3.Heat the salt solution gently until Thermionic Emission. Electrons flow in electron clouds in metals.. The electrons easily leave the surface of hot metals – as they gain enough energy from the heat to overcome the attraction of the nuclei.. 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. 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. Lesson . 2. Galvanic Cells . In the reaction between Zn and CuSO. 4. , the zinc is oxidized by copper (II) ions. . Zn. 0. (s). + Cu. 2+. (. aq. ). + SO. 4. 2-. . . Cu. 0. (s). + Zn. 2+. + SO. 174Classic chemistry experiments 1.Place approximately 3 cm depth of iron wool in the bottom of a test-tube. Wet the2.Invert the test-tube in a beaker of water (approximately 20 cm3.Measure the length Lecture No.6. By: . Sajid. . Hussain. . Qazi. POTENTIAL GRADIENT. It is defined as rate of change of potential with respect to displacement in the direction of electric field, i.e.,. Its unit is volt/meter or volt/cm.. Explain the process of electrolysis and its uses. Electrolysis. A process where electrical energy is transformed into chemical energy. It is not . spontaneous, electrical . energy must be supplied for a . Disclaimer. This presentation (Presentation) has been prepared by Finders Resources Limited (Finders) based on information available to it and from third party sources.. By retaining this Presentation, you (the Recipient) acknowledge and represent to Finders that you have read, understood and accepted the terms of this Important Notice. If you do not accept these terms, you should immediately destroy or delete this Presentation.. Greenbaum. Frank Paynter. Prof. Betty Lise Anderson. Here’s what you’re going to build. Principle of operation. An infrared beam passes through your finger. You are mostly transparent, but blood absorbs this wavelength. H AND S - O N A CTIVITY O BJECTIVES  Apply basic chemistry principles to understan d the process of electrolysis  Understand how electrolysis is used in the processing of copper ores T IME R cathode ray tube. negative. positive. 99.999%. 0.001. % of a gas phase element present. Where are the rays coming from?. How could the direction of the rays be . experimentally determined?. From this experiment, it can be determined that the rays . Structuring the cathode surface to cancel the space charge limit . David H. Dowell, SLAC and Seattle. A holistic cathode design using a contoured surface which shapes the applied field’s enhancement to cancel the space charge limit and linearize the field is described.. Cathode Ray Oscilloscope. The Cathode Ray Oscilloscope (CRO) is a very useful and versatile laboratory instrument used for display, measurement and analysis of waveform of electrical and electronic circuits..