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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

Answer»

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+2e2I; E=0.54
Cl2+2e2Cl; E=1.36
Mn3++eMn2+; E=1.50
Fe3++eFe2+; E=0.77
O2+4H+4e2H2O; E=1.23

While Fe3+ is stable, Mn3+ is not stable in acid solution because



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