Questions 32-34 refer to the following. 5 H2O2(aq) + 2 MnO4 −(aq) + 6 H+(aq) → 2 Mn2+(aq) + 8 H2O(l) — Kinetics Chemistry Question
Question
Questions 32-34 refer to the following.
5 H2O2(aq) + 2 MnO4 −(aq) + 6 H+(aq) → 2 Mn2+(aq) + 8 H2O(l) + 5 O2(g)
In a titration experiment, H2O2(aq) reacts with aqueous MnO4 −(aq) as represented by the equation above. The dark purple KMnO4 solution is added from a buret to a colorless, acidified solution of H2O2(aq) in an Erlenmeyer flask. (Note: At the end point of the titration, the solution is a pale pink color.)
At a certain time during the titration, the rate of appearance of O2(g) was 1.0 × 10^−3 mol/(L·s). What was the rate of disappearance of MnO4 − at the same time?
6.0 × 10^−3 mol/(L·s)
4.0 × 10^−3 mol/(L·s)
6.0 × 10^−4 mol/(L·s)
4.0 × 10^−4 mol/(L·s)