You have a 2.50 cm diameter sphere that you would like to have plated with platinum metal. How long will it take to electroplate a 40.0 micron thick coating onto the sphere using Pt+2 and a current of 0.500 amps? The density of platinum is 21.45 g/cm3. 1 micron = 1.00×10–4 cm. [hint: Calculate the difference in volume of the coated and uncoated spheres and then use the density information to determine your answer.] Time Required = Answer minutes

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Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.