Question: (a) How many coulombs are required to plate a layer of chromium metal 0.25 mm thick on an auto bumper with a total area of

(a) How many coulombs are required to plate a layer of chromium metal 0.25 mm thick on an auto bumper with a total area of 0.32 m2 from a solution containing CrO42-? The density of chromium metal is 7.20 g/cm3.
(b) What current flow is required for this electroplating if the bumper is to be plated in 10.0 s?
(c) If the external source has an emf of + 6.0 V and the electrolytic cell is 65% efficient, how much electrical power is expended to electroplate the bumper?

Step by Step Solution

★★★★★

3.29 Rating (161 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a Total volume of Cr 25 10 4 m 032 m 2 80 10 5 m 3 11 mol Cr The electrode rea... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

876-E-C-E-E-C (1122).docx

120 KBs Word File

Students Have Also Explored These Related Chemical Engineering Questions!

How many faradays are required for each of the following processes? How many coulombs are required? a. Reduction of 1.0 mol Na+ to Na b. Reduction of 1.0 mol Cu2+ to Cu c. Oxidation of 1.0 g H2O to...

How many faradays are required for each of the following processes? How many coulombs are required? a. Reduction of 1.0 mol Fe3+ to Fe2+ b. Reduction of 1.0 mol Fe3+ to Fe c. Oxidation of 1.0 g Sn2+...

How many coulombs are represented by these amounts of electrons: (a) 6.4821017 (b) 1.24 1018 (c) 2.46 1019 (d) 1.628 1020

Course: Facilities Layout Planning Abstract This project illustrates a full design from the scratch for the lifting jack starting from the product, process and schedule design. Followed by Flow,...

The experimental result differs from the assumption. The result shows that the ring oscillator frequencies can be grouped into two groups, where the first group is the high frequency group for the...

How many extra electrons are on ball with a charge of -4x10 -17 C? How many coulombs of charge are on all the electrons in a nickel? Follow the following steps to solve this problem. Find the number...

How many moles of zinc are in 3.80kg of zinc? Express your answer to three significant figures and include the appropriate units. Learning Goal: To relate current, time, charge, and mass for...

Assignment 18.] Concepts 1,2 1. There are very large numbers ofchargcd particles in most objects. Why, then, don't most objects exhibit static electricity? 2. Why do most objects tend to contain...

How many coulombs of charge enter a 1.5cm length of the axon during this process? Express your answer in nanocoulombs. Neurons are components of the nervous system of the body that transmit signals...

A particular 12 V car battery can send a total charge of 100 Ah (ampere-hours) through a circuit, from one terminal to the other. (a) How many coulombs of charge does this represent? ( Hint : See...

Wildfire Schulter, a veteran mutual fund investor, argued, "I can compute the monthly rate of return on a mutual fund by calculating the percentage change in the fund's NAV from the beginning to the...

House Fumiture Berhad produces special quality furniture for household and office use. The manufacturing process starts with the cutting and drilling of the wood using high technology machines in the...

16. What is unearned income? Give two examples of items that would be classified as unearned income.

8. Canada Moves to Restrict Bank Share Buybacks Canada has barred its domestic banks and insurers from buying back their own shares at a time when their priority is to strengthen their balance...

Consider a steady-flow heat exchanger involving two different fluid streams. Under what conditions will the amount of heat lost by one fluid be equal to the amount of heat gained by the other?

A hot-water stream at 80°C enters a mixing chamber with a mass flow rate of 0.5 kg/s where it is mixed with a stream of cold water at 20°C. If it is desired that the mixture leave the chamber...

Liquid water at 300 kPa and 20C is heated in a chamber by mixing it with superheated steam at 300 kPa and 300C. Cold water enters the chamber at a rate of 1.8 kg/s. If the mixture leaves the mixing...

Braemar Corp. issued 30-year bonds two years ago at a coupon rate of 7.1% with a par value amount of $1,000. The bonds make semiannual payments. If these bonds currently sell for 105% of par value,...

2 . Has encontrado un error en un software de terceros mientras trabajabas en un compromiso con un cliente. Esto est causando graves retrasos. Puedes descompilar el cdigo de terceros para eliminar el...

The following table presents sales forecasts for Golden Gelt Giftware. The unit price is $50. The unit cost of the giftware is $30. Year Unit Sales 1. 31,000 2. 39,000 3. 13,000 4. 7,000 Thereafter 0...