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Леголас2
@Леголас2
October 2021
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Решите пожалуйста 3-ий номер , очень срочно.
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MailaMiller
Verified answer
Zn → ZnO → ZnSO₄ → Zn(OH)₂ → K₂ZnO₂ → ZnCl₂ → Zn.
1. 2Zn + O₂ = 2ZnO.
2. ZnO + H₂SO₄ = ZnSO₄ + H₂O.
3. ZnSO₄ + 2KOH = Zn(OH)₂↓ + K₂SO₄.
4. Zn(OH)₂ + 2KOH = K₂ZnO₂ + 2H₂O.
5. K₂ZnO2 + 4HCl = ZnCl₂ + 2KCl + 2H₂O.
6. ZnCl₂ + Ca = CaCl₂ + Zn.
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Answers & Comments
Verified answer
Zn → ZnO → ZnSO₄ → Zn(OH)₂ → K₂ZnO₂ → ZnCl₂ → Zn.
1. 2Zn + O₂ = 2ZnO.
2. ZnO + H₂SO₄ = ZnSO₄ + H₂O.
3. ZnSO₄ + 2KOH = Zn(OH)₂↓ + K₂SO₄.
4. Zn(OH)₂ + 2KOH = K₂ZnO₂ + 2H₂O.
5. K₂ZnO2 + 4HCl = ZnCl₂ + 2KCl + 2H₂O.
6. ZnCl₂ + Ca = CaCl₂ + Zn.