Balancing Redox Reactions: Acidic Solutions
6. Chemical Quantities & Aqueous Reactions / Balancing Redox Reactions: Acidic Solutions / Problem 2
A 0.175 g sample of a specific semimetal M heated in air yielded the corresponding oxide MO2. The reaction required 17.50 mL of 0.550 M MnO4− when the oxide was dissolved in aqueous acid and titrated with KMnO4.
H2MO3(aq) + MnO4−(aq) → Mn2+(aq) + H2MO4(aq) (unbalanced)
Give the name of the semimetal M.
Learn this concept