Equivalent Weight Formula:
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Definition: Equivalent weight of a substance is the ratio of its molecular weight to the charge or valency of the substance.
Purpose: It helps in stoichiometric calculations for chemical reactions, particularly in electrochemistry.
The calculator uses the formula:
Where:
Explanation: The mass of ions is multiplied by Faraday's constant and divided by the total charge transferred during electrolysis.
Details: Calculating equivalent weight is essential for determining reaction stoichiometry in electrochemical cells and for industrial electrolysis processes.
Tips: Enter the mass of ions in kilograms and the electric charge transferred in Coulombs. All values must be > 0.
Q1: What is Faraday's constant?
A: Faraday's constant (96485 C/mol) represents the electric charge carried by one mole of electrons.
Q2: How do I measure the mass of ions?
A: The mass of ions can be determined by weighing the substance before and after electrolysis.
Q3: What units should I use?
A: Use kilograms for mass and Coulombs for charge. The result will be in kilograms.
Q4: Can I use grams instead of kilograms?
A: Yes, but the result will then be in grams. Make sure all units are consistent.
Q5: How accurate is this calculation?
A: The calculation is theoretically accurate, but practical measurements may have experimental errors.