Предмет: Химия, автор: Аноним

Осуществите следующие превращения: Zn-->ZnO-->ZnCl2-->Zn(OH)2-->Na2{Zn(OH)4}-->Zn(OH)2-->ZnSO4

Ответы

Автор ответа: Аноним

2

2Zn + O₂ →t→ 2ZnO

ZnO + 2HCl → ZnCl₂ + H₂O

ZnCl₂ + 2NaOH(недост) → Zn(OH)₂↓ + 2NaCl

Zn(OH)₂ + 2NaOH(конц) → Na₂[Zn(OH)4]

Na₂[Zn(OH)4] + 2HCl(недост) → 2NaCl + Zn(OH)₂↓ + 2H₂O

Zn(OH)₂ + H₂SO4(изб) → ZnSO4 + 2H₂O

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