PbS + HNO3 = Pb + S + NO + H2O

homicidalmaniac81 · Post by **homicidalmaniac81** » Wed Apr 02, 2008 8:55 am

Need help balancing because I have been trying for hours and it is just NOT working!!

peter · Post by **peter** » Tue Apr 15, 2008 8:00 pm

It does not go like that.
it goes like this:

3 PbS + 8 HNO3 = 3 PbSO4 + 8 NO + 4 H2O

homicidalmaniac81 · Post by **homicidalmaniac81** » Tue Apr 15, 2008 11:20 pm

But its stated that the sulfide dissolves and produces the metal ion, sulfur, NO, and water, so that is how the equation was derived by the professor.

peter · Post by **peter** » Wed Apr 16, 2008 6:08 pm

OK, if sulfur is not oxidized then it would be:

3 PbS + 8 HNO₃ = 3 Pb(NO₃)₂ + 3 S + 2 NO + 4 H₂O