MCH3COOH = 200*0,15 = 30г
СH3COOH + NaOH = CH3COONa + H2O
30 x
60 82
mCH3COONa = 30*82\60 = 41г
Ca²⁺+ CO₃²⁻= CaCO₃↓
Ca²⁺ + 2CI⁻ + 2Na⁺+ CO₃²⁻ = CaCO₃↓ + 2Na⁺ + 2CI⁻<span>
CaCI</span>₂ + Na₂CO₃ = CaCO₃↓ + 2NaCI
<span>
Al</span>₂O₃+6H⁺=2Al³⁺+3H₂O
AI₂O₃ + 6H⁺ + 3SO₄²⁻ = 2AI³⁺ +3SO₄²⁻ + 3H₂O<span>
AI</span>₂O₃ + 3H₂SO₄ = AI₂(SO₄)₃ + 3H₂O
<span>
Ba</span>²⁺ + SO₄²⁻ = BaSO₄↓
Ba²⁺ + 2CI⁻ + 2H⁺ + SO₄²⁻ = BaSO₄↓ + 2H⁺ + 2CI⁻
BaCI₂ + H₂SO₄ = BaSO₄↓ + 2HCI
NiSO₄+(NH₄)₂S=(NH₄)₂SO₄ + NiS↓
Ni²⁺+ SO₄²⁻ + 2NH₄⁺ + S²⁻ = 2NH₄⁺ + SO₄²⁻ + NiS↓
Ni²⁺ + S²⁻ = NiS↓
2Al2O3+3H2SO4=Al2(SO4)3+3H2O
CuO+2HCl=CuCl2+H2O