Electrolysis Using Electricity to Do Chemistry

Oxygen gas flows past the cathode (a similar screen) and undergoes reduction. 

Notice that the only product is water. In the space shuttle program, hydrogen-oxygen fuel cells provide electricity and astronauts drink the resulting water. 

Suppose you are making a battery composed of a carbon rod inserted into a moist paste of lead(II) ions, which acts as the cathode. You want the metal casing that encloses the battery to act as the anode. Which metal should you use for the casing to achieve the battery with the highest voltage  

A FIGURE 16.16 Electrolysis of water As a current passes between the electrodes, liquid water is broken down into hydrogen gas (right tube) and oxygen gas (left tube). 

A FIGURE 16.17 Electrolytic cell for silver plating Silver is oxidized on the left side of the cell and reduced at the right. As it is reduced, it is deposited on the object to be plated. 

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Oxidation and Reduction Some Definitions 578 16.5 The Activity Series Predicting Spontaneous Redox Reactions 589 16.7 Electrolysis Using Electricity to Do Chemistry 597... 

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