Redox reactions play a pivotal role in chemistry and biology. The values of standard redox potential (E⊖) of two half cell reactions decided which way the reaction is expected to proceed. A simple example is a Daniell cell in which zinc goes into solution and copper gets deposited. Given below are a set of half cell reactions (acidic medium) along with their E⊖ (V with respect to normal hydrogen electrode) values. Using this data, obtain correct explanations for the following question
I2+2e−→2I⊖; E⊖=0.54
Cl2+2e−→2Cl⊖; E⊖=1.36
Mn3++e−→Mn2+; E⊖=1.50
Fe3++e−→Fe2+; E⊖=0.77
O2+4H⨁+4e−→2H2O; E⊖=1.23
While Fe3+ is stable, Mn3+ is not stable in acid solution because