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 32 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
Gracias!

T4T

  • Member
  • Posts: 348
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

An AC voltage is produced by a magnetic sensor. Most sensors should produce at least 0.1 volt AC ... An AC voltage is produced by a magnetic sensor. Most sensors should produce at least 0.1 volt AC ...
Solution to Physics problem Solution to Physics problem
The molality of a C12H23O11 solution is 0.6 m. what is the freezing point of the solution C? The molality of a C12H23O11 solution is 0.6 m. what is the freezing point of the solution C?
What is the pH of an aqueous solution if the [H+] = 0.000 000 075 M? What is the pH of an aqueous solution if the [H+] = 0.000 000 075 M?
An aqueous solution has a normal boiling point of 103.0C. What is the freezing point of this ... An aqueous solution has a normal boiling point of 103.0C. What is the freezing point of this ...
Video: Types of synapses - electrical & chemical

For a complete list of videos, visit our video library