SECTION - A Consider the following standard electrode potential values: {\Fe}^{3+}{ }_{( {\aq})}+ {\e}^{-} \to {\Fe}^{2+}{ }_{( {\aq})} {\E}^{ {\o}} =+0.77 {\V} {\MnO}_4^{-}{ }_{\text{(aq) }}+8 {\H}^{+}+5 {\e}^{-} \to {\Mn}^{2+}{ }_{\text{(aq) }} +4 {\H}_2 {\O}_{( {\l})} {\E}^{ {\o}}=+ 1.51 {\V} What is the cell potential for the redox reaction

CBSE Class 12 Chemistry 2023 Delhi Set 2 Solved Paper

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SECTION - A

Consider the following standard electrode potential values:

\; {\Fe}^{3+}{ }_{( {\aq})}+ {\e}^{-} → {\Fe}^{2+}{ }_{( {\aq})} {\E}^{ {\o}}

=+0.77 {\V}

\; {\MnO}_4^{-}{ }_{\;\text "(aq) "\;}+8 {\H}^{+}+5 {\e}^{-} → {\Mn}^{2+}{ }_{\;\text "(aq) "\;}

+4 {\H}_2 {\O}_{( {\l})} {\E}^{ {\o}}=+

\;1.51 {\V}

What is the cell potential for the redox reaction

Solution:

{E}°={E}_{{C}}-{E}_{{a}}

=1.51-0.77=+0.74 {V}

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