Final answer:
At the halfway point of the titration, half of the MnO4¯ ions have been converted to Mn2+ ions. Therefore, the particle view that best represents the mixture at the halfway point would show half of the MnO4¯ ions converted to Mn2+ ions.
Step-by-step explanation:
In the given reaction, 2 MnO4¯(aq) + 5 H2O2(aq) + 6 H+(aq) → 2 Mn2+(aq) + 5 O2(g) + 8 H2O(l), at the halfway point to the equivalence point, half of the moles of H2O2 have reacted with the KMnO4 titrant. This means that half of the MnO4¯ ions have been converted to Mn2+ ions. Therefore, the particle view that best represents the mixture at the halfway point would show half of the MnO4¯ ions converted to Mn2+ ions.