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alena407
@alena407
October 2021
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Как решить 3 задание? Срочно
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monkeyme
1. 2Zn + O₂ = 2ZnO
2. ZnO + 2HNO₃ = Zn(NO₃)₂ + H₂O
3. Zn(NO₃)₂ + 2KOH = Zn(OH)₂↓ + 2KNO₃
4. Zn(OH)₂ + H₂SO₄ = ZnSO₄ + 2H₂O
5. ZnO + Na₂O = Na₂ZnO₂
6. Na₂ZnO₂ + 2H₂SO₄ (изб.) = Na₂SO₄ + ZnSO₄ + 2H₂O
7. Zn(OH)₂ + 2NaOH = Na₂ZnO₂ + 2H₂O
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Answers & Comments
2. ZnO + 2HNO₃ = Zn(NO₃)₂ + H₂O
3. Zn(NO₃)₂ + 2KOH = Zn(OH)₂↓ + 2KNO₃
4. Zn(OH)₂ + H₂SO₄ = ZnSO₄ + 2H₂O
5. ZnO + Na₂O = Na₂ZnO₂
6. Na₂ZnO₂ + 2H₂SO₄ (изб.) = Na₂SO₄ + ZnSO₄ + 2H₂O
7. Zn(OH)₂ + 2NaOH = Na₂ZnO₂ + 2H₂O