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August 2022
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Химия 8 класс! 40 баллов!
НОМЕР 20.17
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Julianna5
A)2Na+2H₂O=2NaOH+H₂↑
Na₂O + H₂О = 2NaOH
б)4Li + O₂ = 2Li₂O
Li₂O + H₂O = 2LiOН
в)2Ca+O₂=2CaO
CaO+H2O=Ca(OH)₂
г)S+O₂=SO₂
SO₂ + H₂O = H₂SO₃
Н₂SO₃ = SO₂ + H₂O
SO
₂
+ O
₃
→ SO
₃
+ O
₂
↑
SO₃ + H₂O = H₂SO₄
д)4P+5O₂=P₂O₅
P₂O₅+3H₂O = 2H₃PO₄
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Answers & Comments
Na₂O + H₂О = 2NaOH
б)4Li + O₂ = 2Li₂O
Li₂O + H₂O = 2LiOН
в)2Ca+O₂=2CaO
CaO+H2O=Ca(OH)₂
г)S+O₂=SO₂
SO₂ + H₂O = H₂SO₃
Н₂SO₃ = SO₂ + H₂O
SO₂ + O₃→ SO₃ + O₂↑
SO₃ + H₂O = H₂SO₄
д)4P+5O₂=P₂O₅
P₂O₅+3H₂O = 2H₃PO₄