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July 2021
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1)МgCO3 - MgCl2- Mg(OH)2 - MgSO4
2)ZnCl2 - Zn(OH)2 - ZnCl2
3)CuSO4 - Cu(OH)2 - CuO - Cu
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Приветствую!
₁ ₂ ₃
А. MgCO₃ → MgCl₂ → Mg(OH)₂ → MgSO₄
1. MgCO₃ + 2HCl = MgCl₂ + CO₂↑ + H₂O
2. MgCl₂ + H₂O= Mg(OH)₂
+ 2HCl
3.
Mg(OH)₂ + H₂SO₄ = MgSO₄ + 2H₂
O
₁ ₂
Б.
ZnCl
₂ → Zn(OH)₂ → ZnCl₂
1. ZnCl₂
+ 2NaOH = Zn(OH)
₂
+ 2NaCl
2.
Zn(OH)₂ + 2HCl= ZnCl₂ + 2H₂
O
₁ ₂ ₃
В. CuSO
₄ → Cu(OH)₂ → CuO → Cu
1. СuSO₄ + 2NaOH = Cu(OH)₂ + Na₂SO₄
2. Cu(OH)₂ =CuO+H₂O
3. CuO + H
₂
=Cu + H
₂
O
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Thanks 2
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Answers & Comments
₁ ₂ ₃
А. MgCO₃ → MgCl₂ → Mg(OH)₂ → MgSO₄
1. MgCO₃ + 2HCl = MgCl₂ + CO₂↑ + H₂O
2. MgCl₂ + H₂O= Mg(OH)₂ + 2HCl
3. Mg(OH)₂ + H₂SO₄ = MgSO₄ + 2H₂O
₁ ₂
Б. ZnCl₂ → Zn(OH)₂ → ZnCl₂
1. ZnCl₂ + 2NaOH = Zn(OH)₂ + 2NaCl
2. Zn(OH)₂ + 2HCl= ZnCl₂ + 2H₂O
₁ ₂ ₃
В. CuSO₄ → Cu(OH)₂ → CuO → Cu
1. СuSO₄ + 2NaOH = Cu(OH)₂ + Na₂SO₄
2. Cu(OH)₂ =CuO+H₂O
3. CuO + H₂=Cu + H₂O