Consider the followng list of reagents : Acidified K_(2)Cr_(2)O_(7) alkaline KMnO_(4) ,CuSO_(4),H_(2)O_(2),cI_(2),O_(3),FeCI_(3),HNO_(3) and Na_(2)S_(2)O_(3) The total number of reagent that can oxidise aqueous iodine is

Consider the followng list of reagents : Acidified K_(2)Cr_(2)O_(7) al

1.	Consider the followng list of reagents : Acidified K_(2)Cr_(2)O_(7) alkaline KMnO_(4) ,CuSO_(4),H_(2)O_(2),cI_(2),O_(3),FeCI_(3),HNO_(3) and Na_(2)S_(2)O_(3) The total number of reagent that can oxidise aqueous iodine is
Answer» Solution :Alkaline `KMnO_(4)` oxidises `I^(-) to IO_(3)^(-)` `2KMnO_(4)+H_(2)O+KIrarr2MnO_(2)+2KOH+KIO_(3)` `NaS_(2)O_(3)` being a reducing agent cannot oxidise `I^(-) to I^(2)` All the remaining SEVEN REAGENT can oxidise aqueous ion to iodine i.e `O_(3)+2KI+H_(2)rarr2KOH_I_(2)+O_(2)` `2FeCI_(3)+2KIrarr2FeCI_(2)+2KCI+I_(2)` `4HNO_(3)+22KIrarr2FeCI_(2)+2KCI+I_(2)` `4HNO_(32)+2KIrarr2KNO_(3)+2NO_(2)+I_(2)+2H_(2)O`