Different Concentrations of Ions on Either Side of a Cell

question 42

Short Answer

Different concentrations of ions on either side of a cell membrane constitute a concentration cell, which is described by the Nernst equation given below. What is the electrochemical potential across a membrane when the sodium ion concentration is 0.10 M on one side of the membrane and 0.010 M on the other side, and the temperature is 37C (body temperature)?
(Given: Na^  e^ a,  2.71 V; F  96,485 C; 1 J  1 C V; R  8.315 J / (molK))
E  E - InQ

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