The equilibrium potential for a given ion with differing concentrations across a membrane can be calculated by means of Fick's equation.

Question

Quizplus · Accepted Answer

The equilibrium potential for a given ion across a membrane is calculated using the Nernst equation, not Fick's equation. Fick's law of diffusion describes the rate of diffusion of a substance across a space or membrane, but the Nernst equation specifically calculates the electrical potential that balances an ionic concentration gradient.

The Equilibrium Potential for a Given Ion with Differing Concentrations