FeS + 2HCl >> FeCl2 + H2S
75 grams FeS (1mole FeS/87.92 grams)(2 mole HCl/1 mole FeS)
= 1.71 moles HCl
2 Molar HCl = 1.71 moles HCl/Liters
= 0.855 Liters HCl, or as asked for;
855 milliliters of hydrochloric acid needed
129
169-172
156
166
129
852 - 854
169 - 172
156
H2s
To determine what the white substance is we must add it to HCl.
yes
Hydrogen sulfide (H2S) is released.