How many moles of gold are deposited on the electrode in 10.98 hours?

In summary, to find the current in an electrolytic cell, we need to first find the number of moles of gold deposited on the negative electrode by using its molar mass. This can be calculated by dividing the given mass (3.32 kg) by the molar mass of gold (196.97 g/mol). Next, we need to multiply the number of moles by Avogadro's number to get the number of gold atoms. Each gold atom carries one elementary unit of positive charge, so by knowing the charge and the time (10.98 h), we can easily calculate the current in the cell.
  • #1
bob12345
6
0

Homework Statement



If 3.32 kg of gold is deposited on the negative electrode of an electrolytic cell in a period of 10.98 h, what is the current in the cell in this period?Assume that each gold ion car ries one elementary unit of positive charge.

Homework Equations



i don't know what equation to use all i know is current= charge/time



The Attempt at a Solution


i couldn't find the solution because i didnt know how to use the mass??
 
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  • #2
Are you sure that it was 3.32 kg ? A big piece of gold.

Anyway: Find the molar mass of gold (about 197 g/mol) . Get the moles of gold from the given mass. Multiply by Avogadro number: you get the number of gold atoms. Each carries an elementary charge -how much is it? You know the charge and time, easy to get the current.

ehild
 
Last edited:
  • #3
yes it was 3.32 and now ill try working it out how you said
 
  • #4
the atomic mass is 196.97 bt how do you get it to moles?
 
  • #5
This value means that the mass of one mole gold is 196.97 g.
If 196.97 g is one mole, how many moles are in 3.32 kg?

ehild
 

1. What is electric current and how is it measured?

Electric current is the flow of electric charge through a conductive material. It is measured in amperes (A) using an ammeter.

2. What causes electric current to flow?

Electric current is caused by the movement of electrons from an area of higher electric potential to an area of lower electric potential. This can be achieved through a closed circuit, where electrons flow in a loop, or through a conductive material that allows electrons to move freely.

3. What are some common problems associated with electric current?

Some common problems with electric current include short circuits, which can cause excessive current flow and potentially damage equipment, and voltage drop, which can lead to a decrease in the amount of current reaching the intended destination.

4. How can electric current problems be prevented?

Electric current problems can be prevented by using proper circuit protection, such as fuses or circuit breakers, regularly maintaining and inspecting electrical systems, and ensuring that wiring and connections are properly installed and secure.

5. How is electric current used in everyday life?

Electric current is used in a variety of ways in everyday life, such as powering appliances, lighting homes and buildings, and charging electronic devices. It is also used in industry for manufacturing processes and in transportation through electric vehicles.

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