Thermodynamics and electrochemistry

Nernst equation

E = (61.5 mV/z) log([ion]out/[ion]in)

z ion charge, concentrations outside and inside the cell, at 37 °C

Watch forK⁺ is about −90 mV, Na⁺ about +60 mV. A divalent ion halves the factor.

Apply it · 2 questions

  1. Hyperkalemia and the resting membrane potentialNervous and endocrine systems · set 3 · hard
  2. Nernst potential for potassiumElectricity, magnetism, and electrochemistry · set 4 · hard