1.

On the basis of the electrochemical theory of aqueous corrosion, the reaction occurring at the cathode is [MP PET 1994; UPSEAT 2001]

A.                 \[{{O}_{2\,(g)}}+4H_{(aq)}^{+}+4{{e}^{-}}\to 2{{H}_{2}}{{O}_{(l)}}\]
B.                 \[F{{e}_{(s)}}\to Fe_{(aq)}^{2+}+2{{e}^{-}}\]
C.                 \[Fe_{(aq)}^{2+}\to Fe_{(aq)}^{3+}+{{e}^{-}}\]
D.                 \[{{H}_{2(g)}}+2OH_{(aq)}^{-}\to 2{{H}_{2}}{{O}_{(l)}}+2{{e}^{-}}\]
Answer» B.                 \[F{{e}_{(s)}}\to Fe_{(aq)}^{2+}+2{{e}^{-}}\]


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