Cell Potential given Electrochemical Work Calculator

Cell Potential Formula:

\[ E_{cell} = \frac{w}{n \times F} \]

Cell Potential (V):

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1. What is Cell Potential given Electrochemical Work?

Definition: This calculator determines the cell potential (electromotive force) based on the work done in an electrochemical cell and the moles of electrons transferred.

Purpose: It helps chemists and electrochemists relate the thermodynamic work of a cell to its electrical potential.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ E_{cell} = \frac{w}{n \times F} \]

Where:

\( E_{cell} \) — Cell potential (volts)
\( w \) — Work done (joules)
\( n \) — Moles of electrons transferred
\( F \) — Faraday constant (96485.33212 C/mol)

Explanation: The work done is divided by the product of moles of electrons and Faraday's constant to determine the cell potential.

3. Importance of Cell Potential Calculation

Details: Calculating cell potential helps predict whether redox reactions will occur spontaneously and determines the maximum work obtainable from electrochemical cells.

4. Using the Calculator

Tips: Enter the work done in joules and moles of electrons transferred. Both values must be > 0. The Faraday constant is fixed at 96485.33212 C/mol.

5. Frequently Asked Questions (FAQ)

Q1: What is the Faraday constant?
A: It's the electric charge carried by one mole of electrons (approximately 96485 C/mol).

Q2: How do I determine moles of electrons transferred?
A: Balance the redox reaction to see how many electrons are transferred per mole of reaction.

Q3: What units should I use for work?
A: The calculator requires work in joules (J). 1 J = 1 V × 1 C.

Q4: Can this calculate work from potential?
A: No, this calculator specifically determines potential from work. Rearrange the formula for the reverse calculation.

Q5: What does a negative cell potential mean?
A: A negative result suggests the reaction is non-spontaneous under standard conditions.