EoFe2+/Fe = $-$ 0.441 V and EoFe3+/Fe2+ = 0.771 V, the standard EMF of the reaction Fe + 2Fe3+ $ \to $ 3Fe2+ will be

Question

E^o_Fe²⁺/Fe = $-$ 0.441 V and E^o_{Fe³⁺/Fe²⁺} = 0.771 V, the standard EMF of the reaction Fe + 2Fe³⁺ $ \to $ 3Fe²⁺ will be

0.111 V