# Problem: Gallium is produced by the electrolysis of a solution obtained by dissolving gallium oxide in concentrated NaOH(aq). Calculate the amount of Ga(s) that can be deposited from a  Ga(III) solution by a current of 0.730 A that flows for 40.0 min.

###### FREE Expert Solution

We have to calculate the amount of gallium metal that is deposited on the cathode through electrolysis of a solution containing Ga3+ ions.

• The amount of a substance deposited at an electrode can be determined through the use of Faraday’s constant.
• Faraday’s constant is defined as 9.648x104 C charge per mol of e-.

Ga3+ has a +3 charge, so it requires 3 electrons to discharge completely and deposit as a metal.

Ga3+(aq) + 3e- → Ga(s)

###### Problem Details

Gallium is produced by the electrolysis of a solution obtained by dissolving gallium oxide in concentrated NaOH(aq). Calculate the amount of Ga(s) that can be deposited from a  Ga(III) solution by a current of 0.730 A that flows for 40.0 min.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Faraday's Constant concept. You can view video lessons to learn Faraday's Constant. Or if you need more Faraday's Constant practice, you can also practice Faraday's Constant practice problems.