Problem: A cell has a standard emf of + 0.151 V at 298 K.What is the value of the equilibrium constant for the cell reaction if n = 3?

FREE Expert Solution

We are asked to determine the value of the equilibrium constant, K for the cell reaction given its standard emf and number of electrons transferred, n at 298 K. 


The Nernst Equation relates the equilibrium constant and cell potential and is given by the equation:

 

E°cell=RTnFln K


E°cell = cell potential, V
R = gas constant = 8.314 J/(mol
·K)
T = temperature, K
n = mole e- transferred
F = Faraday’s constant, 96485 C/mol e- 
K = equilibrium constant

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Problem Details

A cell has a standard emf of + 0.151 V at 298 K.

What is the value of the equilibrium constant for the cell reaction if n = 3?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Cell Potential concept. If you need more Cell Potential practice, you can also practice Cell Potential practice problems.