Which one of the following reactions cannot be used to set u p an electrochemical cell?

Options

A. `Fe+2H^(+) to Fe^(2+)+H_(2)`
B. `Mg+Sn^(2+) to Mg^(2+)+Sn`
C. `Cl_(2)+2KBr to 2KCl+Br_(2)`
D. `AgNO_(3)+NaCl to AgCl+NaNO_(3)`

Answer

D