Faraday's Law of Electrolysis Calculator
Calculate mass deposited: m = (M x I x t) / (n x F).
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Enter the current in amperes, time in seconds, molar mass of the substance being deposited in g/mol, and the number of electrons transferred per ion. The calculator applies Faraday's law: m = (M x I x t) / (n x F).
About the Faraday's Law of Electrolysis Calculator
Faraday's laws of electrolysis, formulated by Michael Faraday in the 1830s, quantify the relationship between electric charge and chemical change. They are fundamental to electroplating, electrorefining, industrial electrolysis (chlor-alkali process), and battery design.
Frequently Asked Questions
What is Faraday's law of electrolysis?
Faraday's law states that the mass deposited during electrolysis is proportional to the charge passed and the molar mass, and inversely proportional to the number of electrons transferred: m = MIt/(nF).
How do I convert time to seconds?
Multiply hours by 3600 or minutes by 60. For example, 2 hours = 7200 seconds. The calculator requires time in seconds because current (amperes) is coulombs per second.
What is n for copper electroplating?
For Cu2+ deposition, n = 2 because each copper ion gains 2 electrons: Cu2+ + 2e- -> Cu. For silver (Ag+), n = 1. For aluminum (Al3+), n = 3.