---
title: "Faraday's Constant — AP Chem Definition & Exam Guide"
description: "Faraday's constant (96,485 C/mol e⁻) converts moles of electrons to charge. It powers ΔG° = -nFE° and electrolysis math in AP Chem Unit 9."
canonical: "https://fiveable.me/ap-chem/key-terms/faradays-constant"
type: "key-term"
subject: "AP Chemistry"
---

# Faraday's Constant — AP Chem Definition & Exam Guide

## Definition

Faraday's constant represents the total electric charge carried by one mole of electrons. It is approximately 96,485.34 coulombs per mole of electrons.

## Related Study Guides

- [9.9 Cell Potential and Free Energy](/ap-chem/unit-9/cell-potential-free-energy/study-guide/GLRagoPDoMJ35XxbRbdb)

## Review

### Related Terms

- [Electron](/ap-chem/key-terms/electron): A subatomic particle with a negative electric charge.
- [Mole](/ap-chem/key-terms/mole): The amount of any substance that contains as many entities (atoms, molecules, ions etc.) as there are atoms in exactly 12 g of carbon-12.
- [Coulomb](/ap-chem/key-terms/coulomb): The standard unit of electric charge in the International System of Units (SI), equal to the quantity of electricity conveyed in one second by a current of one ampere.