Faraday's Law Calculator

Calculate mass of substance deposited, charge passed, current, and time in electrolysis.

πŸ”‹ Faraday's Law of Electrolysis

⚠ Enter valid values.
Faraday's Law
m = (I Γ— t Γ— M) / (n Γ— F)
Mass Deposited
β€”
g

πŸ”‹ Faraday's Laws

m = (I Γ— t Γ— M) / (n Γ— F)
Q = I Γ— t     Moles e⁻ = Q / F
  • F = Faraday constant = 96,485 C/mol
  • n = number of electrons per ion (charge number)
  • m = mass deposited (g)
  • I = current (amperes), t = time (seconds)

πŸ“– Example

βœ… Copper plating

I = 2 A, t = 3600 s (1 h), Cu²⁺ (n=2, M=63.546)

m = (2 Γ— 3600 Γ— 63.546) / (2 Γ— 96485)

m = 457,531 / 192,970 = 2.37 g Cu

❓ FAQ

What is the Faraday constant?
F = 96,485 C/mol represents the charge of one mole of electrons. It equals the elementary charge times Avogadro's number: F = e Γ— Nₐ.
What is electrolysis used for?
Electrolysis has industrial applications including: electroplating metals (Ag, Ni, Cr), production of Al from Alβ‚‚O₃, chlorine and NaOH from NaCl (chlor-alkali), and refining of Cu.
Comprehensive Guide

Understanding Faraday's Law: A Complete Guide

The Faraday's Law Calculator is an essential analytical tool for chemistry students, educators, and laboratory professionals. Accurate Faraday's Law calculations form the backbone of both theoretical studies and physical experiments. Mastering the concepts behind Faraday's Law is crucial for understanding advanced chemical reactions and laboratory procedures.

Why is Faraday's Law Important?

In analytical chemistry, precision is everything. Having a reliable way to compute Faraday's Law saves time, prevents wasted materials, and ensures scientific accuracy.

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Always verify your input units before calculating. Mismatched units (e.g., using mL instead of L) are the most common source of error when determining Faraday's Law!

Common Applications

  • Academic Study: Verifying manual homework calculations.
  • Laboratory Practice: Standardizing lab reagent preparations.
  • Data Validation: Cross-checking experimental data analysis.

Relying solely on the calculator without understanding the underlying formula. Always review the step-by-step breakdown to internalize the mechanics.