\( \mathrm{Zn}\left|\mathrm{Zn}^{2+}(1 \mathrm{M})\right|\left|\mathrm{Ni}^{2+}(1 \mathrm{M})\ri....
0\( \mathrm{Zn}\left|\mathrm{Zn}^{2+}(1 \mathrm{M})\right|\left|\mathrm{Ni}^{2+}(1 \mathrm{M})\right| \mathrm{Ni} \), antilog \( (0.7411)=5.5 \)
\( \mathrm{E}_{\mathrm{Zn}^{2+} / \mathrm{Zn}}^{\mathrm{o}}=-0.75 \mathrm{~V}, \mathrm{E}_{\mathrm{Ni}^{2+} / \mathrm{Ni}}^{\mathrm{o}}=-0.24 \mathrm{~V} \) Which
P
statement is/are correct for above cell?
(1) Emf of cell is \( 0.51 \mathrm{~V} \) and cell reaction is spontaneous
(2) Emf of cell is \( -0.51 \mathrm{~V} \) and cell reaction is nonspontaneous
(3) Emf of cell is zero when concentration of \( \mathrm{Ni}^{2+} \) is \( 5.5 \times 10^{-18} \mathrm{M} \)
(4) Cell reaction is non-spontaneous when Concentration of \( \mathrm{Ni}^{2+} \) is less than \( 5.5 \times 10^{-18} \mathrm{M} \)
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