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reynaliana
@reynaliana
October 2021
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Напишите уравнения реакций, с помощью которых можно осуществить следующие превращения:
1) Li →LiOH →LiCl
2) Na →Na2O2 , NaOH →Na2SO4
3) Ca →CaH2 →Ca(OH)2
4) AlCl3→ Al(OH)3 →Al (NO3)3
5) Fe→ FeCl3→ Fe(OH)2
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Verified answer
1)
2Li + 2H₂O = 2LiOH + H₂
LiOH + HCl = LiCl + H₂O
2)
2Na + O₂ = Na₂O₂
2NaOH + H₂SO₄ = Na₂SO₄ + 2H₂O
3)
Ca + 2HCl₂ = CaCl₂ + H₂
CaCl₂ + 2KOH = Ca(OH)₂ + 2KCl
4)
AlCl₃ + 3NaOH = Al(OH)₃ + 3NaCl
Al(OH)₃ + 3HNO₃ = Al(NO₃)₃ + 3H₂O
5)
2Fe + 3Cl₂ = 2FeCl₃
FeCl₂ вероятно в Fe(OH)₃, то: FeCl₃ + 3KOH=Fe(OH)₃ + 3KCl
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Answers & Comments
Verified answer
1)2Li + 2H₂O = 2LiOH + H₂
LiOH + HCl = LiCl + H₂O
2)
2Na + O₂ = Na₂O₂
2NaOH + H₂SO₄ = Na₂SO₄ + 2H₂O
3)
Ca + 2HCl₂ = CaCl₂ + H₂
CaCl₂ + 2KOH = Ca(OH)₂ + 2KCl
4)
AlCl₃ + 3NaOH = Al(OH)₃ + 3NaCl
Al(OH)₃ + 3HNO₃ = Al(NO₃)₃ + 3H₂O
5)
2Fe + 3Cl₂ = 2FeCl₃
FeCl₂ вероятно в Fe(OH)₃, то: FeCl₃ + 3KOH=Fe(OH)₃ + 3KCl