Question

Given the following electrode potentials at 25°C


Given the following electrode potentials at 25°C 

Fe3+ + e- → Fe2+ E° = 0.171 V 

Fe2+ + 2e-→ Fe(s) E° = -0.440 V 

Calculate the electrode potential for 

Fe3+ + 3 e- → Fe(s) 


Select one: 

a.-0.236 

b. 0.081 

c.-0.036 

d. -0.211 

e. 0.121 

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