Sunday, May 16, 2010

Electrochemistry (due on May 19, 2010)

Compare and contrast Galvanic and Electrolytic cell. Describe in detail.

14 comments:

  1. Galvanic cells, also known as voltaic cells, are eletrochemical cells that use chemical reactions to produce electrical energy (flow of electrons). Electrolytic cells are eletrochemical cells that decomposes chemical compounds by means of electrical energy, in a process called electrolysis. They are the same because they both are eletrochemical cells and both us chemical reactions to do there jobs. They are different becase galavanic cells produces, while eletrolytic cells decomposes.

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  2. Galvanic cell, converts chemical energy into electrical energy, by using spontaneous chemical reactions that take place at the electrodes. Each galvanic cell has its own characteristic voltage (defined as the energy release per electron transfer from one electrode to the other). An electrolytic cell decomposes chemical compounds by means of electrical energy, in a process called electrolysis.

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  3. They are alike because they both require a salt bridge, they both have a consistent flow of electrons from the anode to the cathode. They are different because in an electrolytic cell there is an external source of voltage that forces the electrons to flow in the opposite direction of the voltaic cell turning the anode into the cathode and the cathode into the anode.

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  4. As Tysherrica stated, galvanic cells are also known as voltaic cells. In a voltaic cell, energy is released from a spontaneous redox reaction. In an electrolytic cell, energy is absorbed to drive a non-spontaneous reaction. The main thing to remember is that energy is relased in a voltaic or galvanic cell, and energy is absorbed in a electrolytic cell. Another very important thing to remember is that in a voltaic cell, a redox reaction occurs which causes the spontaneous flow of electrons. In an electrolytic cell, it requires an outside power source, such as a battery, to push its electrons.

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  5. Difference: galvanic cells convert chemical energy of oxidants and reductants itno electrical energy; the chemical energy is produced by a sponatneous redox reaction; mostly used as batteries.....Electrolytic cells cause a chemical change through electrical energy and causes a non spontaneous chemical reacion to occur;absorbs energy....Similarity: both cells contain anodes and cathodes where oxidation and reduction occur;they are both electrochemical cells; distribute electrons/flow of electrons;rely or benifits from the source of electrical energy.

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  6. As tysherrica and Ramoni said A Galvanic cell,generally consists of two different metals connected by a salt bridge, or individual half-cells separated by a porous membrane.An electrolytic cell decomposes chemical compounds by means of electrical energy.The chemical energy is increased.

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  7. A Galvanic cell is an electrochemical cell that derives electrical energy from chemical reactions taking place within the cell. An electrolytic cell decomposes chemical compounds by means of electrical energy, in a process called electrolysis.
    DIFFERENCE: In ELECTROLYTIC CELL,electric current is used to derive a non-spontaneous redox reaction. In GALVANIC CELL,electric current is produced as a result of spontaneous redox reaction. A galvanic cell uses electrodes of different metals, whereas an electrolytic cell may use the same metal for cathode and anode.
    COMPARISON: A simple galvanic cell will consist only of an electrolyte and two different electrodes.

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  9. Galvanic cells are eletrochemical cells that use chemical reactions to produce electrical energy which allows electrons to flow. An electrolytic cell decomposes chemical compounds by means of electrical energy, in a process called electrolysis.
    They are alike but different in many ways. they are eletrochemical cells.The main difference between the two is that galavanic cells produces, but eletrolytic cells decomposes.

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  10. An electrolytic cell is different from a galvanic cell because and eletrolytic cell decomposes chemical compounds of electrical energy. A galvanic cell is different from an electrolytic cell because a galvanic cell is an electrochemical cell that gains electrical energy from chemical reactions taking place within the cell. They compare because a galvanic and an electrolytic cell both convert energy.

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  11. Galvanic cells is a type of engery source that converts chemical energy into eletrical energy. In oder for this to happen there has to be a redox reaction within the eletrochemical cell.
    Electrochemical cell is when it takes eletrical energy and converts it into chemical energy. Electrical energy is required to produce a redox reactions to convert the energy

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  12. A galvanic cell, also known as a voltaic cell, is a cell that generates an electromotive force by an irreversible conversion of chemical compounds to electrical energy. An electrolytic cell is a cell that decomposes chemical compounds by means of electrical energy. The difference between the two is that galvanic cells produce electrical energy through chemical compounds, and electrolytic cells decompose (breaks down) chemical compounds through electrical energy to bring about chemical energy. The similarity is that both cells produce some type of energy.

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  13. galvanic cells produce energy such as batteries for work. electrolytic cells are the exact opposite and take energy away from the process and doesn't use it for anything else. galvanic cells also can be made from simpler house held products.

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  14. Galvanic cells is an electrochemical cell that derives electrical energy from chemical reactions taking place within the cell. An electrolytic cell is a cell containing an electrolyte through which an externally generated electric current is passed by a system of electrodes in order to produce an electrochemical reaction. Basically galvanic cells produce energy and electrolytic cells take energy away.

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