Which one of the following reactions represents the oxidizing property of $H_2O_2$?

$\begin {array} {1 1} (1)\;2KMnO_4+3 H_2SO_4+5H_2O_2 \longrightarrow K_2SO_4+2 MnSO_4+8H_2O+5O_2 \\ (2)\;2K_3[Fe(CN)_6]+2KOH +H_2O_2 \longrightarrow 2K_4[Fe(CN)_6]+2H_2O+O_2 \\ (3)\;pbO_2+H_2)_2 \longrightarrow pbO+H_2O+O_2 \\ (4)\;2KI +H_2SO_4+H_2O_2 \longrightarrow K_2SO_4+I_2+2 H_2O \end {array}$

$(4)\;2KI +H_2SO_4+H_2O_2 \longrightarrow K_2SO_4+I_2+2 H_2O$
answered Nov 7, 2013 by