Nernst Equation (E2)

Question 1

What does the Nernst Equation tell us?

Answer 1

An estimation of the millivolt value of a particular ion when reaching electrochemical equilibrium

Question 2

What is the formula for the Nernst equation?

Answer 2

E_eq = (RT/zF) * log([C_out]/([C_in])

Question 3

What does variable E_eq stand for?

Answer 3

Equilibrium for the ion in question

Question 4

What does variable R stand for?

Answer 4

Ideal gas constant (0.08206 mol/K)

Question 5

What does variable T stand for?

Answer 5

Absolute temperature in Kelvin (Celsius + 273.15)

Question 6

What does variable F stand for?

Answer 6

Faraday’s constant (96,485 coulombs/mol)

Question 7

What does variable Z stand for?

Answer 7

Number of charges on ion (e.g., Na⁺ = 1, Ca²⁺ = 2, Cl^- = -1)

Question 8

What does variable C_out stand for?

Answer 8

Concentration outside the cell membrane

Question 9

What does variable C_in stand for?

Answer 9

Concentration inside the cell membrane