A smaple of pyrolusite weighing 0.5 g is distilled with conc. HCl. The evolved Cl_(2) when passed through a solution of KI liberates sufficient I_(2) to react with 125 mL of N//12.5 hypo (Na_(2)S_(2)O_(3). 5H_(2)O). Calculate the percentage of MnO_(2) in pyrolusite.

A smaple of pyrolusite weighing 0.5 g is distilled with conc. HCl. The

1.	A smaple of pyrolusite weighing 0.5 g is distilled with conc. HCl. The evolved Cl_(2) when passed through a solution of KI liberates sufficient I_(2) to react with 125 mL of N//12.5 hypo (Na_(2)S_(2)O_(3). 5H_(2)O). Calculate the percentage of MnO_(2) in pyrolusite.
Answer» SOLUTION :N//A