A) \[A+{{B}^{2+}}\xrightarrow{{}}{{A}^{2+}}+B\]
B) \[{{A}^{2+}}+B\xrightarrow{{}}A+{{B}^{2+}}\]
C) Both and
D) None of these
Correct Answer: A
Solution :
From \[E{{{}^\circ }_{red.}}\] values, it is clear that A is more electropositive than B (as it has lesser \[E{{{}^\circ }_{red.}}\]), hence it can replace B from its salt solution and act as anode in galvanic cell. Hence, correct cell equation will be: \[A+{{B}^{2+}}\xrightarrow{{}}{{A}^{2+}}+B\]
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