Rend eletrolise (%)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The electrolysis efficiency (%) calculator compares the actual mass obtained (m_real) with the theoretical mass predicted (m_teo) using the formula (m_real/m_teo) × 100. This tool assesses how closely an electrochemical experiment aligns with Faraday's laws, which predict mass based on current, time, and molar mass.
Theoretical mass is calculated using Faraday's equations, while actual mass is measured experimentally. A result near 100% indicates optimal efficiency. Lower values suggest energy losses, such as incomplete charge transfer or contamination. This metric is critical for validating industrial processes like aluminum production or electroplating.
This calculator is widely used in academic research, labs, and manufacturing. For example, in metal refining or battery electrode production, it helps identify inefficiencies in equipment, solution purity, or experimental setup.
Ensure consistent units (grams for both masses) when using the calculator. Inaccurate measurements or overlooked variables, like temperature fluctuations, can skew results. Cross-check with repeated experiments for reliability.
Frequently asked questions
What is electrolysis efficiency?
It measures the percentage of actual mass obtained versus the theoretical mass predicted by Faraday's laws in an electrochemical reaction.
When to use this calculator?
To evaluate efficiency in electrolysis experiments, industrial metal extraction, or electrochemistry education.
Can efficiency exceed 100%?
No, but values above 100% may indicate measurement errors, such as sample contamination or miscalculations.
How to calculate theoretical mass?
Use m_teo = (I × t × M) / (n × F), where I = current, t = time, M = molar mass, n = electrons transferred, and F = Faraday's constant.
What affects efficiency?
Solution impurities, unstable temperature, uneven current distribution, or damaged electrodes.