$Zn(s) + Cu^{2+}(M) \to Zn^{2+}(M') + Cu(s);$ $E^o _{cell} = 1.10\,V$
$X$-axis :$log_{10}$ $\frac{{[Z{n^{2 + }}]}}{{[C{u^{2 + }}]}}$, $Y$ -axis : $E_{cell}$
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[Given : Molal boiling point elevation constant of water $\left(\mathrm{K}_{\mathrm{b}}\right)=0.52 \mathrm{K.} \mathrm{kg} \mathrm{mol}^{-1}$,
$1 \mathrm{~atm}$ pressure $=760 \mathrm{~mm}$ of $\mathrm{Hg}$, molar mass of water $\left.=18 \mathrm{~g} \mathrm{~mol}^{-1}\right\rfloor$
[Atomic Number: $\mathrm{Fe}=26, \mathrm{Mn}=25, \mathrm{Co}=27$ ]
| List-$I$ | List-$II$ |
| ($P$) $ t_{2 g}^6 e_g^0$ | ($1$)$\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ |
| ($Q$) $t_{2 g}^3 e_g^2$ | ($2$) $\left[\mathrm{Mn}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ |
| ($R$) $e^2 t_2^3$ | ($3$)$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ |
| ($S$) $t_{2 g}^{+} e_g^2$ | ($4$)$\left[\mathrm{FeCl}_4\right]^{-}$ |
| $\left[\mathrm{CoCl}_4\right]^{2-}$ |
| Column $I$ | Column $II$ |
| $(A)$ $\mathrm{Cu}+$ dil $\mathrm{HNO}_3$ | $(p)$ NO |
| $(B)$ $\mathrm{Cu}+$ conc $\mathrm{HNO}_3$ | $(q)$ $\mathrm{NO}_2$ |
| $(C)$ $\mathrm{Zn}+$ dil $\mathrm{HNO}_3$ | $(r)$ $\mathrm{N}_2 \mathrm{O}$ |
| $(D)$ $\mathrm{Zn}+$ conc $\mathrm{HNO}_3$ | $(s)$ $\mathrm{Cu}\left(\mathrm{NO}_3\right)_2$ |
| $(t)$ $ \mathrm{Zn}\left(\mathrm{NO}_3\right)_2$ |