Chemistry Homework Help

24/7 Chemistry Homework Help

Get step-by-step solutions from expert tutors.

How it works?

Ask a question

Type, take a picture, or paste your question with all necessary details to ensure high-quality responses.

Get an answer in less than 24hrs

Once our tutors receive the question, they'll begin. You'll get an email once the solution is ready.

Get Notified

We will send you email and text notification to let you know when your question is answered.

Browse Homework Solutions

22 solutions

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

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 17.1 A of current are passed through a gold solution for 42.0 min? Express your answer with the appropriate units.

Solved • Mar 4, 2020

Electroplating

Q. What substance is produced at the cathode 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 chemical formula.

Solved • Mar 4, 2020

Electroplating

Q. Galvanized nails are iron nails that have been plated with zinc to prevent rusting. The relevant reaction is Zn^2+(aq) + 2e^- → Zn(s) For a large batch of nails, a manufacture needs to plate a total zinc mass of 2.10 kg on the surface to get adequate coverage. Identify the anode and cathode when plating an iron nail with zinc.

Solved • Mar 4, 2020

Electroplating

Q. What mass of Ni^2+ is produced in solution by passing a current of 67.0 A for a period of 12.0 h, assuming the cell is 87.0% efficient? Express your answer to three significant figures and include the appropriate units.

Solved • Oct 12, 2019

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 21.4 A of current are passed through a gold solution for 27.0 min? Express your answer with the appropriate units.

Solved • Oct 12, 2019

Electroplating

Q. To improve conductivity in the electroplating of automobile bumpers, a thin coating of copper separates the steel from a heavy coating of chromium. (b) If the area of the trim piece is 50.0 cm^2, what is the thickness of the Cu coating? (d of Cu = 8.95g/cm^3)

Solved • Nov 20, 2019