Consider the balanced chemical equation. H₂O₂(aq)+3I−(aq)+2H+(aq)→I₃−(aq)+2H₂O(l) In the first 15.0 s of the reaction, the concentration of I− drops from 1.000 M to 0.773 M.
Predict the rate of change in the concentration of H₂O₂ (Δ[H2O₂]/Δt). Express the rate to three significant figures and include the appropriate units.