Final answer:
The rate of change in the concentration of H2O2 can be determined by finding the slope of the tangent line to the concentration versus time graph. In this case, the rate of change is -0.0193 M/s.
Step-by-step explanation:
The rate of change in the concentration of H2O2 (Δ[H2O2]/Δt) can be determined by looking at the slope of the tangent line to the concentration versus time graph. In this case, the graph shows the concentration of I- dropping from 1.000 M to 0.788 M in the first 11.0 s of the reaction. To calculate the rate of change, we need to find the change in concentration of H2O2 divided by the change in time.
Using the given data, the change in concentration of H2O2 is:
Δ[H2O2] = [H2O2]2 - [H2O2]1 = 0 - 1.000 M = -0.212 M
The change in time is Δt = t2 - t1 = 11.0 s - 0 s = 11.0 s
Therefore, the rate of change in the concentration of H2O2 is Δ[H2O2]/Δt = (-0.212 M) / (11.0 s) = -0.0193 M/s