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Electroplating

Q. How much Pt is deposited and at which electrode in the reaction Pt2+ + 2e- --> Pt, if electrolysis is allowed to occur for 3 hours with a steady current of 2.5 amps.

Solved • Apr 29, 2020

Electroplating

Q. Electrolysis of molten MgCl2 is the final production step in the isolation of magnesium from seawater by the Dow process. If 76.2 g of Mg are obtained, how many moles of electrons are required?

Solved • Apr 20, 2020

Electroplating

Q. Metal plating is done by passing current through a metal solution. For example, an item can become gold plated by attaching the item to a power source and submerging it into a Au^3+ solution. The item itself serves as the cathode, at which the Au^3+ ions are reduced to Au(s). A piece of solid gold is used as the anode and is also connected to the power source, thus completing the circuit. What mass of gold is produced when 9.40 A of current are passed through a gold solution for 10.0 min? Express your answer with the appropriate units.

Solved • Apr 6, 2020

Electroplating

Q. Metal plating is done by passing current through a metal solution. For example, an item can become gold plated by attaching the item to a power source and submerging it into a Au^3+ solution. The item itself serves as the cathode, at which the Au^3+ ions are reduced to Au(s). A piece of solid gold is used as the anode and is also connected to the power source, thus completing the circuit. What mass of gold is produced when 21.1 A of current are passed through a gold solution for 18.0 min? Express your answer with the appropriate units.

Solved • Mar 7, 2020

Electroplating

Q. What mass of Cu(s) is electroplated by running 25.0 A of current through a Cu^2+(aq) solution for 4.00 h? Express your answer to three significant figures and include the appropriate units.

Solved • Mar 7, 2020

Electroplating

Q. With a power supply able to produce 125 A of current, how long must the nails stay in the electrolysis chamber to receive 1.48x10^7 C of charge? Express your answer to three significant figures and include the appropriate units.

Solved • Mar 7, 2020

Electroplating

Q. What substance is produced at the anode during the electrolysis of a mixture of molten calcium bromide, CaBr2(l), and molten magnesium iodide, MgI2(l)? Assume standard conditions. Express your answer as a chemical formula.

Solved • Mar 4, 2020