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liubakuzovkina
@liubakuzovkina
July 2022
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Напишіть рівняння, за допомогою яких можна здійснити такі перетворення:
а) Fe₂O₃ → FeCl₃ → Fe(OH)₃ → Fe₂O₃
б) BaCl₂ ← BaO → Ba(OH)₂ → BaCl₂
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zubareva45
Verified answer
а) Fe₂O₃ → FeCl₃ → Fe(OH)₃ → Fe₂O₃
Fe₂O₃ + 6HCI = 2FeCl₃ + 3H₂O
FeCl₃ + 3NaOH = Fe(OH)₃↓ + 3NaCI
2Fe(OH)₃ + t = Fe₂O₃ + 3H₂O
б
) BaCl₂ ← BaO → Ba(OH)₂ → BaCl₂
BaO + 2HCI = BaCl₂ + H₂O
BaO + H₂O = Ba(OH)₂
Ba(OH)₂ + 2HCI = BaCl₂ + 2H₂O
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Answers & Comments
Verified answer
а) Fe₂O₃ → FeCl₃ → Fe(OH)₃ → Fe₂O₃Fe₂O₃ + 6HCI = 2FeCl₃ + 3H₂O
FeCl₃ + 3NaOH = Fe(OH)₃↓ + 3NaCI
2Fe(OH)₃ + t = Fe₂O₃ + 3H₂O
б) BaCl₂ ← BaO → Ba(OH)₂ → BaCl₂
BaO + 2HCI = BaCl₂ + H₂O
BaO + H₂O = Ba(OH)₂
Ba(OH)₂ + 2HCI = BaCl₂ + 2H₂O