$10mL$ sample of iodide was treated with $15mL$ of $0\mathrm{.}1182$mAgNO$3.$ The excess silver was treated with $0\mathrm{.}101M$ SCN requiring $2\mathrm{.}38mL$ reach the red fe $(SCN{)}^{+2}$ end Point $.$Desermine concentration of $I^{-}$