1. What is Mass of Substance undergoing Electrolysis?

Definition: This calculator determines the mass of ions reacted or formed during electrolysis based on the electrochemical equivalent and charge transferred.

Purpose: It helps chemists and electrochemists quantify the amount of substance involved in electrolytic reactions.

2. How Does the Calculator Work?

The calculator uses Faraday's first law of electrolysis:

Where:

• \( m_{ion} \) — Mass of ions (kg)
• \( Z \) — Electrochemical equivalent of element (kg/C)
• \( C_{tran} \) — Electric charge transferred through circuit (C)

Explanation: The mass of substance deposited or liberated at an electrode is directly proportional to the quantity of electricity passed through the electrolyte.

3. Importance of Mass Calculation in Electrolysis

Details: Accurate mass calculations are crucial for stoichiometric measurements, industrial electrolysis processes, and electrochemical research.

4. Using the Calculator

Tips: Enter the electrochemical equivalent (default 0.022 kg/C for many elements) and the charge transferred in coulombs. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is electrochemical equivalent?
A: It's the mass of element (in kg) transported by 1 coulomb of electric charge during electrolysis.

Q2: How do I find the charge transferred?
A: Measure current (I) and time (t), then calculate Q = I × t. Or use our Charge Calculator tool.

Q3: What's a typical electrochemical equivalent value?
A: For silver it's 1.118×10⁻⁶ kg/C, for copper 3.29×10⁻⁷ kg/C, and for zinc 3.39×10⁻⁷ kg/C.

Q4: Does this account for current efficiency?
A: No, this gives theoretical mass. Actual mass may differ due to side reactions or inefficiencies.

Q5: Can this be used for any electrolytic process?
A: Yes, as long as you know the electrochemical equivalent of the substance involved.