1. 3 H2S + 2 HNO3 → 2 NO + 3 S + 4 H2O
2. 2 HBr + H2SO4 → Br2 + SO2 + 2 H2O
3. H2SO4 + 8 HI → 4 I2 + H2S + 4 H2O
4. H2 + N2O → N2 + H2O
5. 10 K + 2 KNO3 → 6 K2O + N2
6. Fe2O3 + 3S → 2Fe + 3SO
7. 4 NH3 + 3 O2 → 6 H2O + 2 N2
8. N2H4 + 2 H2O2 → N2 + 4 H2O
9. 2 NO2 + H2O → HNO2 + HNO3
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Answers & Comments
1. 3 H2S + 2 HNO3 → 2 NO + 3 S + 4 H2O
2. 2 HBr + H2SO4 → Br2 + SO2 + 2 H2O
3. H2SO4 + 8 HI → 4 I2 + H2S + 4 H2O
4. H2 + N2O → N2 + H2O
5. 10 K + 2 KNO3 → 6 K2O + N2
6. Fe2O3 + 3S → 2Fe + 3SO
7. 4 NH3 + 3 O2 → 6 H2O + 2 N2
8. N2H4 + 2 H2O2 → N2 + 4 H2O
9. 2 NO2 + H2O → HNO2 + HNO3