At 37 °C the concentration of Fe3 + inside a cell is 0.053 M and outside is 0.044 M. The cell membrane is permeable to Fe3+. What potential difference in volts would have to exist across the membrane for Fe3 + to be in equilibrium at the stated conditions? Give you answer as the absolute value of the potential difference in volts.

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Webster

Chemistry

11 July, 23:10

At 37 °C the concentration of Fe3 + inside a cell is 0.053 M and outside is 0.044 M. The cell membrane is permeable to Fe3+. What potential difference in volts would have to exist across the membrane for Fe3 + to be in equilibrium at the stated conditions? Give you answer as the absolute value of the potential difference in volts.

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Izabella Scott · Answer 1

Use the nernst equation : E cell = E - RT nF ln [F e 3 + out ] [F e 3 + in ] At eq. ΔG=0=-nF E cell → E cell = 0 and thus: E = RT nF ln [F e 3 + out ] [F e 3 + in ]