How many moles of hydrogen peroxide () are strictly required to completely reduce exactly of potassi — Hydrogen Chemistry Question

💡 Solution & Explanation

The balanced chemical equation for the reduction of $KMnO_4$ by $H_2O_2$ in an acidic medium is: $2MnO_4^- + 6H^+ + 5H_2O_2 \rightarrow 2Mn^{2+} + 8H_2O + 5O_2$. According to the stoichiometry, $5\text{ moles}$ of $H_2O_2$ perfectly reduce $2\text{ moles}$ of $MnO_4^-$ ions.