why are different forms to solve chemical equations?
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Italiby
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why are different forms to solve chemical equations?


why are different forms to solve chemical equations?
Example:

Form 1:
NiS + HNO3 = NiNO3 + HS

Form 2:
NiS + 4 HNO3 = Ni(NO3)3 + NO + S + 2 H2O
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ChenBeier
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The first equation is wrong

It shoud be NiS + 2 HNO3 = Ni(NO3)2 + H2S

The second is ok.

The difference between the equations is because depending of the concentration of nitric acid. It works as oxidiser in highrt concentration. Ni2+ goes to Ni3+. and Sulfide will go to sulphur. Nitrate itself is reduced to Nitrogenoxide.
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Italiby
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Thanks! Very Happy
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