How to use the electrolysis calculator
Find mass deposited during electrolysis. Enter current, time, molar mass, electrons per ion in the fields above; the charge, moles of metal, mass deposited are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- I — Current (A)
- t — Time (min)
- M — Molar mass (g/mol)
- z — Electrons per ion
Worked example
With current = 2 A, time = 30 min, molar mass = 63.55 g/mol, electrons per ion = 2, the calculator gives charge ≈ 3,600 C; moles of metal ≈ 0.01865569 mol; mass deposited ≈ 1.185569 g.
Frequently asked questions
What is the formula for the electrolysis calculation?
Charge (C) = I × t × 60. Moles of metal (mol) = [Charge] / (z × FARADAY). Mass deposited (g) = [Moles of metal] × M. Here I is current (A), t is time (min), M is molar mass (g/mol), z is electrons per ion.
What inputs do I need for the electrolysis (faraday's law) calculator?
You need current in A, time in min, molar mass in g/mol, electrons per ion. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.