The correct value of cell potential in volt for the reaction that occurs when the…
Chemistry · NEET · NTA Exams — Electrochemistry
The correct value of cell potential in volt for the reaction that occurs when the following two half cells are connected, is:
\[\begin{array}{l} \mathrm{Fe}_{(\mathrm{aq})}^{+2}+2 \mathrm{e}^{-} \longrightarrow \mathrm{Fe}(5), \mathrm{E}^{\mathrm{a}}=-0.44 \mathrm{~V} \\ \mathrm{Cr}_{2} \mathrm{O}_{7(\mathrm{aq})}^{2-}+14 \mathrm{H}^{+}+6 \mathrm{e}^{-} \rightarrow 2 \mathrm{Cr}^{3+}+7 \mathrm{H}_{2} \mathrm{O}_{1} \mathrm{E}^{\mathrm{a}}=+1.33 \mathrm{~V} \end{array}\]
- +0.01 V
- +0.89 V
- +1.77 V
- +2.65 V
Answer
(C) +1.77 V
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