A mineral containing iron(II) sulphide but no other sulphides is treated with excess hydrochloride
Channel: Doubtnut
Date: 2020-04-26

A mineral containing iron(II) sulphide but no other sulphides is treated with excess hydrochloride acid to produce hydrogen sulphide. If a 3.15g sample of the mineral hydrogen sulphide. If a 3.15g sample of the mineral yields 448 mL of hydrogen sulphide gas (measured at `0^(@)C` and 760 mm Hg), what is the mass percentage of iron (II) sulphide inthe sample?