Electric Current Formula:
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Definition: This calculator determines the electric current required to deposit or dissolve a given mass of substance during electrolysis.
Purpose: It helps electrochemists and engineers calculate the current needed for electrochemical processes like electroplating or battery charging.
The calculator uses Faraday's law of electrolysis:
Where:
Explanation: The mass of substance deposited is proportional to the quantity of electricity passed through the electrolyte.
Details: Accurate current calculation ensures proper deposition rates in electroplating, correct battery charging, and efficient electrochemical processes.
Tips: Enter the mass of ions in kg, electrochemical equivalent (default 0.022 kg/C for many elements), and total time in seconds. All values must be > 0.
Q1: What is electrochemical equivalent?
A: It's the mass of substance deposited or dissolved per coulomb of charge passed, specific to each chemical element.
Q2: How do I find the electrochemical equivalent?
A: It can be calculated from molar mass and valency, or found in electrochemical reference tables for common elements.
Q3: What units should I use?
A: Use kilograms for mass, kg/C for electrochemical equivalent, and seconds for time to get current in amperes.
Q4: Can this be used for any electrochemical process?
A: Yes, as long as you know the electrochemical equivalent of the substance involved in the reaction.
Q5: Does this account for current efficiency?
A: No, the calculation assumes 100% current efficiency. For real processes, divide the result by the efficiency factor.