51. The standard cell potential ( ) for the reaction below is +0.63 V. At 25 °C, the cell potential for this reaction is ________ V when [Zn2+ ] = 3.0 M and [Pb2+ ] =2.0✖10-4M.
Pb2+(aq) + Zn (s) → Zn2+(aq) + Pb (s)
(A)0.51
(B)0.86
(C) 0.40
(D)0.75