Question

What information is needed in order to apply the Nernst equation?

A) The osmotic pressure inside the cell.

B) The concentration of an ion inside the cell.

C) The concentration of an ion in the extracellular fluid.

D) The total osmolality of the extracellular fluid.

Answer 1

To apply the Nernst equation, you need to know the concentration of an ion inside the cell and the concentration of an ion in the extracellular fluid.

Step-by-step explanation:

The Nernst equation is used to calculate the cell potential under non-standard conditions. To apply the Nernst equation, you need to know the concentration of an ion inside the cell and the concentration of an ion in the extracellular fluid. These concentrations are used to calculate the reaction quotient, which is then used in the Nernst equation to determine the cell potential. Therefore, the correct answer is B) The concentration of an ion inside the cell and C) The concentration of an ion in the extracellular fluid.

Answer 2

The information that needed in order to apply the Nernst equations is The concentration of an ion inside the cell and the concentration of an ion in the extracellular fluid. The correct answer is B&C.

Step-by-step explanation:

• To apply the Nernst equation, the information you primarily need includes: The concentration of an ion inside the cell and

• The concentration of an ion in the extracellular fluid.

These concentrations are used to calculate the reaction quotient, which is essential when using the Nernst equation to determine the cell potential under non-standard conditions.

The Nernst equation relates the measured cell potential to this reaction quotient, also considering the temperature and the number of electrons transferred in the reaction. The equation enables the determination of equilibrium constants and the calculation of ion concentrations based on measured potentials.

To summarize, the Nernst equation allows us to calculate the electrochemical cell's potential by taking into account the concentrations of ions participating in the redox reaction. The correct answer is B&c.