Balance the following equation using oxidation number method As2S3 + HNO3 + H2O → H3AsO4+H2SO4+NO
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Explanation:
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As2IIIS3-II + 28 HNVO3 + 4 H2O → 6 H3AsVO4 + 9 H2SVIO4 + 28 NIIO
This is an oxidation-reduction (redox) reaction:
6 AsIII - 12 e- → 6 AsV
(oxidation)
9 S-II - 72 e- → 9 SVI
(oxidation)
28 NV + 84 e- → 28 NII
(reduction)
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