This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Gold is produced electrochemically from an aqueous solution of Au(CN)2 containing an excess of CN. ... (Read 34 times)

geodog55

  • Hero Member
  • *****
  • Posts: 530
on: Mar 21, 2021

Question 1

Gold (atomic mass = 197.0) is plated from a solution of chloroauric acid, HAuCl4; it deposits on the cathode. Calculate the time it takes to deposit 0.56 gram of gold, passing a current of 0.10 amperes. (1 faraday = 96,485 coulombs)

◦ 23 hours
◦ 2.3 hours
◦ 46 minutes
◦ 15 minutes
◦ None of these are correct.

Question 2

Gold is produced electrochemically from an aqueous solution of Au(CN)2– containing an excess of CN–. Gold metal and oxygen gas are produced at the electrodes. How many moles of O2 will be produced during the production of 1.00 mole of gold?

◦ 0.25
◦ 0.50
◦ 1.00
◦ 3.56
◦ 4.00
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by geodog55 on Mar 21, 2021

Animal_Goddess

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Mar 21, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 64% of students answer this correctly


geodog55

  • Member
  • Posts: 530
Reply 2 on: Mar 21, 2021
:D TYSM

skipfourms123

  • Member
  • Posts: 343
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

A William Jennings Bryan poster alludes to religion: “no crown of thorns” and no “cross of gold.” Br A William Jennings Bryan poster alludes to religion: “no crown of thorns” and no “cross of gold.” Br
How many moles of AgCl are contained in 244 mL of 0.135 m AgCl solution? The density of the ... How many moles of AgCl are contained in 244 mL of 0.135 m AgCl solution? The density of the ...
0.300 moles of sodium nitrite are needed for a reaction. The solution is 0.450 M. How many mL ... 0.300 moles of sodium nitrite are needed for a reaction. The solution is 0.450 M. How many mL ...
The predicted solution to the problem posed The predicted solution to the problem posed
What nuclide is produced when Pb-210 decays by beta emission? What nuclide is produced when Pb-210 decays by beta emission?
Video: The Vestibular System

For a complete list of videos, visit our video library