Question

For the reaction:
FeS2 + KMnO4 + H^+ ———> Fe3+ + H2SO4 + Mn2+ + H2O

If the molar mass of FeS2 is M then what is it’s equivalent mass

A) M
B) M/10
C)M/15

Answer 1

Answer:

Explanation:

Fe2+→Fe3++e−;S22−​→2S4++10e−

∴FeS2​→2S4++Fe3++11e−

Equivalent mass of FeS2​=Molar mass/11​.