The reaction of acidified, aqueous potassium iodide with aqueous hydrogen peroxide
`2I^-(aq) + H_2O_2 (aq) + 2H^+(aq) rarr I_2(aq) + 2H_2 O)(I)` is thought to involve the following steps :
`H_2O_2 + I^- rarr H_2O + OI^-` (slow)
`OI^- + H^+ rarr HOI` (fast)
`HOI+H^+ + I^- rarr I_2 + H_2O` (fast)
Which one of the following conclusions can be drawn from this information?

Options

A. The iodide ion is oxidised by the hydrogen peroxide
B. The acid acts as a catalyst
C. The rate determining step is
`H_2O_2`+`I^-` `rarr`H_2 O`+O`I^-`
D. The rate equation for the reaction is rate=`k[H_2O_2][I^-]`

Answer

A, C, D