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Presentation On Hydrogen-Oxygen Fuel Cells

Home > PowerPoint Slides > Presentation On Hydrogen-Oxygen Fuel Cells
Published in: Chemistry | Science
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This PPT is suitable for the IGCSE and O Level Chemistry students. It only provides theoretical background of the topic. The practice questions, worksheets and topical questions will be discussed during the tutoring sessions

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  1. Hydrogen-Oxygen Fuel Cells Chemistry (IGCSE / O-Level)
  2. What will you learn in this lesson? • How to produce electricity with water as the only chemical product • Advantages and disadvantages of using hydrogen—oxygen fuel cells in comparison with gasoline / petrol engines in vehicles
  3. Fuel Cell A device for continuously converting chemical energy into electrical energy using a combustion reaction. A hydrogen-oxygen fuse cell uses a reaction between hydrogen and oxygen. They do not use any recharging as long as the reactants are fed. 2H2(g) + oz(g) -4 2+4±011) Non-polluting fuel Exothermic reaction
  4. Hydrogen Powered Vehicles Hydrogen produces water due to combustion and releases a lot of energy per gram as compared to other fuels Using a fuel cell operating an electric motor, hydrogen has efficiency of 60% compared with efficiency of 35% for a petrol engine hydrogen pumped car
  5. Pros and Cons renewable if produced using solar or wind energy lower flammability than petrol virtually emission-free zero emissions of C02 non-toxic non-renewable if generated using nuclear energy or energy from fossil fuels large fuel tank required as yet there are very few 'filling stations', where a car could be topped up With hydrogen engine redesign needed or a fuel cell system currently expensive In one type of hydrogen-oxygen cell the electrode reactions are: _H+[aq) + 02(g) + 4+4+184) + 4e- 2Hi0(1) Balance the first these half-equations so that together they add up to the overall equation: 2H2{g.) + Oi(g) 2H20(l)

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