In electrolysis, if the current is 2 A and the time is 30 minutes, how many mole

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Question: In electrolysis, if the current is 2 A and the time is 30 minutes, how many moles of electrons are transferred?

Options:

Correct Answer: 0.2 mol

Solution:

Using the formula: moles = (current × time) / (n × F), where n=1 for electrons and F=96500 C/mol.

In electrolysis, if the current is 2 A and the time is 30 minutes, how many moles of electrons are transferred?

In electrolysis, if the current is 2 A and the time is 30 minutes, how many moles of electrons are transferred?

Step 1: Identify the given values. The current (I) is 2 A and the time (t) is 30 minutes.
Step 2: Convert the time from minutes to seconds. Since 1 minute = 60 seconds, 30 minutes = 30 × 60 = 1800 seconds.
Step 3: Use the formula for moles of electrons: moles = (current × time) / (n × F). Here, n = 1 (for electrons) and F = 96500 C/mol.
Step 4: Substitute the values into the formula: moles = (2 A × 1800 s) / (1 × 96500 C/mol).
Step 5: Calculate the numerator: 2 A × 1800 s = 3600 C.
Step 6: Now divide the numerator by F: moles = 3600 C / 96500 C/mol.
Step 7: Perform the division to find the number of moles of electrons.

Electrolysis – The process of using electrical energy to drive a non-spontaneous chemical reaction, often involving the transfer of electrons.
Faraday's Law of Electrolysis – The amount of substance transformed during electrolysis is directly proportional to the quantity of electricity passed through the electrolyte.
Moles and Charge – Understanding the relationship between current, time, and the number of moles of electrons using the formula moles = (current × time) / (n × F).