Different Concentrations of Ions on Either Side of a Cell $\rightarrow$

question 7

Multiple Choice

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^- $\rightarrow$ Na, Eº_red = -2.71 V; F = 96,500 C; 1 J = 1 C V; R =8.315 J / mol K) )
E =E° = InQ

• A)61.5 mV
• B)26.7 mV
• C)2.65 V
• D)2.68 V
• E)2.98 V

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