Nernst Potential

  • Membrane potential at which, given certain conditions, a single ion is at an equilibrium.
  • $E_{\ce{K+}}=-90$ mV
  • $E_{\ce{Na+}}=55$ mV
  • $E_{\ce{Cl-}}=-65$ mV

$$E_{ion}=\frac{RT}{zF}\ln\frac{[ion]_o}{[ion]_i}$$