Purification of nickel can be achieved by electrorefining nickel from an impure nickel anode onto a pure nickel cathode in an electrolytic cell. How many hours will it take to plate 19.5 kg of nickel onto the cathode if the current passed through the cell is held constant at 31.5 A? Assume the nickel in the electrolytic solution is present as Ni²+. time: h

Q: How did you get 10306.22

A: The relationship between moles and mass is Mass = Mole ×Molar mass

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A: This is aromatic substitutions reaction.  Nitration, sulphonation and halogenation

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A: Incorrect statement - A secondary amine has a nitrogen which makes three single bonds

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Q: ОН -CO2H OH NO₂

A: Step by step mechanism given below

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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.