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2 Pages

### Zn+_+Cu+Cell

Course: ENVIRON 404, Fall 2011
School: Michigan
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+ Zn2+ 2 e- Zn - 0.76 volts Cu2+ + 2 e- Cu + 0.34 volts Reverse one, (doesnt matter which) and change the sign. Add the two reactions together and if the electrons dont cancel multiply through both sides so that they do. BUT: Dont multiply the voltage. (Running more it times doesnt change G. ) Add the voltages algebraically. i.e. include the sign. Zn + Cu2+ Zn2+ + Cu + 1.10 volts A positive voltage means...

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+ Zn2+ 2 e- Zn - 0.76 volts Cu2+ + 2 e- Cu + 0.34 volts Reverse one, (doesnt matter which) and change the sign. Add the two reactions together and if the electrons dont cancel multiply through both sides so that they do. BUT: Dont multiply the voltage. (Running more it times doesnt change G. ) Add the voltages algebraically. i.e. include the sign. Zn + Cu2+ Zn2+ + Cu + 1.10 volts A positive voltage means this cell reaction goes forward as written. A negative voltage means the reverse reaction is spontaneous.
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
Michigan - ENVIRON - 404
Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
Michigan - ENVIRON - 404
Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
Michigan - ENVIRON - 404
Michigan - ENVIRON - 404
Carbon Dioxide-A Few BasicsA good review of general properties of CO2 can be found in Wikipedia:http:/en.wikipedia.org/wiki/Carbon_dioxide.The basic symbiosis between CO2emitters (us and all other respiring animals) and plants, which absorb CO2 and re
Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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Michigan - ENVIRON - 404
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