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FeS dissolved in dilute nitric acid, equation? The answer is that FeS is oxidized to Fe3+, S, why? Can you write the equation?
Negative divalent sulfur is first oxidized to zero-valent sulfur atoms, and the rate at which zero-valent sulfur atoms bind to stable sulfur is much faster than the rate at which sulfur atoms are oxidized by nitric acid (the intramolecular reaction takes precedence)
So we're going to have sulphur.
If you heat it, it'll produce sulfuric acid.
FeS+4HNO3=Fe (NO3)3+S+NO (gas)+2H2O
Negative divalent sulfur is first oxidized to zero-valent sulfur atoms, and the rate at which zero-valent sulfur atoms bind to stable sulfur is much faster than the rate at which sulfur atoms are oxidized by nitric acid (the intramolecular reaction takes precedence)
So we're gon na have sulfur.
If you heat it, it'll produce sulfuric acid.
FeS+4HNO3=Fe (NO3)3+S+NO (gas)+2H2O
Solution of ferrous sulfide in dilute nitric acid
FeS+6HNO3=Fe (NO3)3+H2SO4+3NO+2H2O
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