Use the method of Exercise 75 to determine the volume of 0.1000 M KMnO₄ required to titrate 5.00 mL samples of H₂O₂(aq) for each of the entries in Table 20.1. Plot these volumes of KMnO₄(aq) as a function of time, and show that from this graph you can get the same rate of reaction at 1400 s as that obtained in Figure 20-2.

Exercise 75

Exactly 300 s after decomposition of H₂O₂(aq) begins (reaction 20.3), a 5.00 mL sample is removed and immediately titrated with 37.1 mL of 0.1000 M KMnO₄. What is at this 300 s point in the reaction?

Reaction (20.3)

Table 20.1

Figure 20-2

Transcribed Image Text:

H,Oz(aq) — H₂O(1) + 02(8) (20.3)