31A current of 3.8 A is passed through a solution of AgNO3 to electroplate it onto a surface. Calculate the mass, in grams, of pure silver deposited onthe surface after 69 seconds.Round your answer to 2 decimal places. Enter your answer as a number without a unit. Your work is worth 6 pts and should include units.Type your answer... DUse a table of standard reduction potentials to determine E cell.Enter your answer a number without units, rounded to 2 decimal places.Your work is worth and should include units.Type your answer...Calculate the cell voltage when [Ni2+] = 1.5 M and [Fe²+] = 0.41 Mat25˚C.Round your answer to 2 decimal places. Enter your answer as a numberwithout a unit. Your work is worth and should include units.Type your answer...

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31 A current of 3.8 A is passed through a solution of AgNO3 to electroplate it onto a surface. Calculate the mass, in grams, of pure silver deposited the surface after 69 seconds. Round your answer to 2 decimal places. Enter your answer as a number without a unit. Your work is worth 6 pts and should include units. Type your answer...

31 A current of 3.8 A is passed through a solution of AgNO3 to electroplate it onto a surface. Calculate the mass, in grams, of pure silver deposited the surface after 69 seconds. Round your answer to 2 decimal places. Enter your answer as a number without a unit. Your work is worth 6 pts and should include units. Type your answer...

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter13: Electrochemistry

Section: Chapter Questions

Problem 13.44PAE: A magnesium bar with a mass of 6.0 kg is attached to a buried iron pipe to serve as a sacrificial...

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Similar questions

A factory wants to produce 1.00 103 kg barium from the electrolysis of molten barium chloride. What current must be applied for 4.00 h to accomplish this?
The mass of three different metal electrodes, each from a different galvanic cell, were determined before and after the current generated by the oxidation-reduction reaction in each cell was allowed to flow for a few minutes. The first metal electrode, given the label A, was found to have increased in mass; the second metal electrode, given the label B, did not change in mass; and the third metal electrode, given the label C, was found to have lost mass. Make an educated guess as to which electrodes were active and which were inert electrodes, and which were anode(s) and which were the cathode(s).
It took 150. s for a current of 1.25 A to plate out 0.109 g of a metal from a solution containing its cations. Show that it is not possible for the cations to have a charge of 1+.
A magnesium bar with a mass of 6.0 kg is attached to a buried iron pipe to serve as a sacrificial anode. An average current of 0.020 A flows between the bar and the pipe. (a) What reaction takes place at the surface of the magnesium bar? (b) What reaction takes place at the surface of the iron pipe? (C) In which direction do electrons flow between the two surfaces? (d) How many years would it take for the entire magnesium bar to be consumed?
For a voltage-sensitive application, you are working on a battery that must have a working voltage of 0.85 V. The half-cells to be used have a standard cell potential of 0.97 V. What must be done to achieve the correct voltage? What information would you need to look up?
An active (metal) electrode was found to gain mass as the oxidation-reduction reaction was allowed to proceed. Was the electrode part of the anode or cathode? Explain.
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Consider a galvanic cell based on the following half-reactions: a. What is the expected cell potential with all components in their standard states? b. What is the oxidizing agent in the overall cell reaction? c. What substances make up the anode compartment? d. In the standard cell, in which direction do the electrons flow? e. How many electrons are transferred per unit of cell reaction? f. If this cell is set up at 25C with [Fe2+] = 2.00 104 M and [La3+] = 3.00 103 M, what is the expected cell potential?