1. K₂Cr₂O₇ + 3Na₂SO₃ + 4H₂O → 2Cr(OH)₃ ↓ + 3Na₂SO₄ + 2KOH
2. 10HNO₃(конц.) + I₂ → 2HIO₃ + 10NO₂ + 4H₂O
3. 8NO + 3HClO₄ + 4H₂O → 8HNO₃ + 3HCl
4. 4Zn + KNO₃ + 7KOH → NH₃ + 4K₂ZnO₂ + 2H₂O
5. 2Fe(OH)₃ + 3Br₂ + 10KOH → 2K₂FeO₄ + 6KBr + 8H₂O
6. 2NO₂ + P₂O₃ + 4KOH → 2NO + 2K₂HPO₄ + H₂O
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Answers & Comments
1. K₂Cr₂O₇ + 3Na₂SO₃ + 4H₂O → 2Cr(OH)₃ ↓ + 3Na₂SO₄ + 2KOH
2. 10HNO₃(конц.) + I₂ → 2HIO₃ + 10NO₂ + 4H₂O
3. 8NO + 3HClO₄ + 4H₂O → 8HNO₃ + 3HCl
4. 4Zn + KNO₃ + 7KOH → NH₃ + 4K₂ZnO₂ + 2H₂O
5. 2Fe(OH)₃ + 3Br₂ + 10KOH → 2K₂FeO₄ + 6KBr + 8H₂O
6. 2NO₂ + P₂O₃ + 4KOH → 2NO + 2K₂HPO₄ + H₂O