Reduction Potential

The standard reduction potential of the Ag^(o+)|Ag electrode at 298K is 0.799V . Given that for AgI,K_(sp)=8.7xx10^(-17) , evaluate the potential of the Ag^(o+)|Ag electrode in a saturated solution of AgI . Also calculate the standard reduction potential of the I^(c-) |AgI|Ag electrode.