1.

Given the following half reactions: \[{{A}^{2+}}+{{e}^{-}}\to {{A}^{+}},{{E}^{o}}=+1.70V\] \[{{B}^{2+}}+2{{e}^{-}}\to {{B}^{+}},{{E}^{o}}=+0.60V\] \[{{C}^{3+}}+{{e}^{-}}\to {{C}^{2+}},{{E}^{o}}=+0.90V\] The only reaction that could be used in titration would be

A. \[{{A}^{+}}\] with \[{{B}^{4+}}\]
B. \[{{A}^{+}}\] with \[{{C}^{3+}}\]
C. \[{{A}^{2+}}\] with \[{{C}^{2+}}\]
D. \[{{C}^{2+}}\] with \[{{B}^{4+}}\]
Answer» D. \[{{C}^{2+}}\] with \[{{B}^{4+}}\]


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