$A$ hypothetical galvanic cell is $A_{(s)} | A^{+}_{(1 \ M)} || B^{+2}_{(1 \ M)} | B_{(s)}$ and the $EMF$ of the cell is positive. What is the possible cell reaction?

  • A
    $A_{(s)} + B^{+2}_{(aq)} \rightarrow A^{+}_{(aq)} + B_{(s)}$
  • B
    $2A_{(s)} + B^{+2}_{(aq)} \rightarrow 2A^{+}_{(aq)} + B_{(s)}$
  • C
    $A_{(s)} + 2B^{+2}_{(aq)} \rightarrow A^{+}_{(aq)} + 2B_{(s)}$
  • D
    $2A^{+}_{(aq)} + B_{(s)} \rightarrow 2A_{(s)} + B^{+2}_{(aq)}$

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