1. What is Equivalent Weight given Mass and Current Flowing?

Definition: This calculator determines the equivalent weight of a substance based on the mass of ions produced or consumed during electrolysis, the current flowing, and the time taken.

Purpose: It helps chemists and electrochemists quantify the relationship between electrical charge and chemical change in electrolytic processes.

2. How Does the Calculator Work?

The calculator uses Faraday's law of electrolysis formula:

Where:

• \( E \) — Equivalent weight of substance (kg)
• \( m_{ion} \) — Mass of ions reacted or formed (kg)
• \( I \) — Current flowing through the electrolyte (A)
• \( t \) — Total time of electrolysis (s)
• 96485 — Faraday's constant (C/mol)

Explanation: The formula relates the mass of substance deposited or dissolved at an electrode to the quantity of electricity passed through the electrolyte.

3. Importance of Equivalent Weight Calculation

Details: Calculating equivalent weight is crucial for understanding stoichiometry in electrochemical reactions, determining purity of substances, and designing electrochemical cells.

4. Using the Calculator

Tips: Enter the mass of ions in kilograms, current in amperes, and time in seconds. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

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: Measure the mass difference of the electrode before and after electrolysis.

Q3: What units should I use?
A: Use kilograms for mass, amperes for current, and seconds for time to get equivalent weight in kg.

Q4: Can I use this for any electrolyte?
A: Yes, as long as you know the mass change and can measure current and time accurately.

Q5: Why is equivalent weight important?
A: It helps determine the amount of substance that will react with or be produced by a given quantity of electricity.