Sn+NO3+H' = SnO2 + NO2 +H2O
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Colorless, yellow, or red, fuming liquid with an acrid, suffocating odor. [Note: Often used in an aqueous solution. Fuming nitric acid is concentrated nitric acid that contains dissolved nitrogen dioxide.]
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1 HNO3 + Sn → H2O + NO2 + SnO2
3 HNO3 + SnS2 → H2O + H2SO4 + NO2 + SnO2
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