$E^{\circ}=-0.800\, V$

$(ii)$ $A g+\mathrm{I}^{-} \rightarrow A g \mathrm{I}+e$

$E^{\circ}=0.152\, V$

From ( $i$ ) and $(ii)$ we have,

$A g \mathrm{I} \rightarrow A g^{+}+\mathrm{I}$

$E^{\circ}=-0.952\, V$

$E_{c e l l}^{\circ}=\frac{0.059}{n} \log K$

$\therefore-0.952=\frac{0.059}{1} \log \left[A g^{+}\right]\left[\mathrm{I}^{\mathrm{I}}\right]$

[as $k=\left[A g^{+}\right]\left[\mathrm{I}^{-}\right]$

$\quad-\frac{0.952}{0.059}=\log K_{s p}$

$\quad-16.13=\log K_{s p}$