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maria330
@maria330
July 2022
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помогите, срочно. химия 8 класс 3 и 5 задание
прошу, помогите
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mrvladimir2
Verified answer
3.
2)Fe2(SO4)3 + 3BaCl2 = 3BaSO4↓ + 2FeCl3
4.
3H2SO4 + Fe2O3 = Fe2(SO4)3 + 3H2O
6H⁺+3SO₄²⁻+Fe₂O₃ = 2Fe³⁺+3SO₄⁻ +3H₂O
6H⁺+Fe₂O₃ = 2Fe³⁺+3H₂O
Ответ: 1) 12
5.
Na2CO3 + BaCl₂ = BaCO₃↓ + 2NaCl
2Na⁺+CO₃²⁻+Ba⁺+2Cl⁻ = BaCO₃↓ + 2Na⁺+2Cl⁻
Ba⁺+CO₃²⁻ = BaCO₃↓
Ответ: 2) 3
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Answers & Comments
Verified answer
3.2)Fe2(SO4)3 + 3BaCl2 = 3BaSO4↓ + 2FeCl3
4.
3H2SO4 + Fe2O3 = Fe2(SO4)3 + 3H2O
6H⁺+3SO₄²⁻+Fe₂O₃ = 2Fe³⁺+3SO₄⁻ +3H₂O
6H⁺+Fe₂O₃ = 2Fe³⁺+3H₂O
Ответ: 1) 12
5.
Na2CO3 + BaCl₂ = BaCO₃↓ + 2NaCl
2Na⁺+CO₃²⁻+Ba⁺+2Cl⁻ = BaCO₃↓ + 2Na⁺+2Cl⁻
Ba⁺+CO₃²⁻ = BaCO₃↓
Ответ: 2) 3