Strongest reducing agent among the following is I. {\Na}^{+}+e^{-} \to {\Na}(s) E^{\circ}=-2.71 {\V} II. {\Al}^{3+}+3 e^{-} \to {\Al}(s) E^{\circ}=-1.66 {\V} III. {\F}_2(g)+2 e^{-} \to 2 {\F}^{-} E^{\circ}=+2.87 {\V} IV. 2 {\H}_2 {\O}+2 e^{-} \to {\H}_2(g)+2 {\OH}^{-}(a q);E^{\circ}=-0.83 {\V}

COMEDK Exam 2015 Solved Paper

Question : 70 of 180

Marks: +1, -0

Strongest reducing agent among the following is
I. Na++e−→Na(s)‌‌‌ ‌‌‌E∘=−2.71V
II. Al3++3e−→Al(s)‌‌‌‌‌E∘=−1.66V
III. F2(g)+2e−→2F−‌‌‌‌‌E∘=+2.87V
IV. 2H2O+2e−→H2(g)+2OH−(aq);‌‌‌E∘=−0.83V

only IV
only III
only II
only I

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