Question

Calculate the equilibrium constant for each of the reactions at 25∘C.

Standard Electrode Potentials at 25 ∘C

Reduction Half-Reaction		E∘(V)
Fe3+(aq)+3e−	→Fe(s)	-0.036
Pb2+(aq)+2e−	→Pb(s)	-0.13
Ni2+(aq)+2e−	→Ni(s)	-0.23
O2(g)+2H2O(l)+4e−	→4OH−(aq)	0.40
Cl2(g)+2e−	→2Cl−	1.36
I2(s)+2e−	→2I−	0.54

Part A

2Fe3+(aq)+3Pb(s)→2Fe(s)+3Pb2+(aq)

Express your answer using two significant figures.

K =

Incorrect; Try Again; 4 attempts remaining

Part B

O2(g)+2H2O(l)+2Ni(s)→4OH−(aq)+2Ni2+(aq)

Express your answer using two significant figures.

K =

Part C

Cl2(g)+2I−(aq)→2Cl−(aq)+I2(s)

Express your answer using two significant figures.

K =