JEE Advanced 2014 Paper 1 Chemistry Q15

Chemistry · Titrations: Acid-Base, Complexometric, Redox, Precipitation · Redox Chemistry & Diagrams

Problem

Consider the following list of reagents: Acidified

\ce{K2Cr2O7}

, alkaline

\ce{KMnO4}

\ce{CuSO4}

\ce{H2O2}

\ce{Cl2}

\ce{O3}

\ce{FeCl3}

\ce{HNO3}

and

\ce{Na2S2O3}

. The total number of reagents that can oxidise aqueous iodide to iodine is