Problem: Calculate Ksp for iron(II) sulfide given the following data:FeS(s) + 2e- → Fe(s) + S 2-(aq)      ε° = —1.01 VFe2+(aq) + 2e- →Fe(s)                  ε° = —0.44 V

FREE Expert Solution

Step 1

FeS(s) + 2e-  Fe(s) + S 2-(aq)

Fe(s)Fe2+(aq) + 2e-

__________________________

FeS (s) ⇌ Fe2+ (aq) + S2- (aq)


Step 2

FeS (s) → Fe (s) + S2(aq)              oxidation → anode

FeS(s) + 2e Fe(s) + S 2-(aq)       reduction → cathode


Step 3

E°cell = E°cathode - E°anodeE°cell =(1.01 V) - (0.44 V)

cell  = -0.57 V


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Problem Details

Calculate Ksp for iron(II) sulfide given the following data:

FeS(s) + 2e→ Fe(s) + S 2-(aq)      ε° = —1.01 V

Fe2+(aq) + 2e→Fe(s)                  ε° = —0.44 V

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