Question

Пожалуйста, помогите!
Очень надо.

Answer 1

AgNO₃ + HBr = AgBr↓ + HNO₃
Ag⁺ + NO₃⁻ + H⁺ + Br⁻ = AgBr↓ + H⁺ + NO₃⁻
Ag⁺  + Br⁻ = AgBr↓ 

BaCl₂ + K₂CO₃ = BaCO₃↓ + 2KCl
Ba²⁺ + 2Cl⁻ + 2K⁺ + CO₃²⁻ = BaCO₃↓ + 2K⁺ + 2Cl⁻
Ba²⁺  + CO₃²⁻ = BaCO₃↓ 

CuSO₄ + Ba(OH)₂ = Cu(OH)₂↓ + BaSO₄↓
Cu²⁺ + SO₄²⁻ + Ba²⁺ + 2OH⁻ = Cu(OH)₂↓ + BaSO₄↓

Ba(NO₃)₂ + K₂CrO₄ = BaCrO₄↓ + 2KNO₃
Ba²⁺ + 2NO₃²⁻ + 2K⁺ + CrO₄²⁻ = BaCrO₄↓ + 2K⁺ + 2NO₃⁻
Ba²⁺ + CrO₄²⁻ = BaCrO₄↓ 

AlCl₃ + Na₃PO₄ = AlPO₄↓ + 3NaCl
Al³⁺ + 3Cl⁻ + 3Na⁺ + PO₄₃⁻ = AlPO₄↓ + 3Na⁺ + 3Cl⁻
Al³⁺ +  PO₄³⁻ = AlPO₄↓ 

Answer 2

1) 
AgNO3+HBr = AgBr↓ + HNO3
Ag⁺ + Br⁻ = AgBr↓

BaCl2+K2CO3 = BaCO3↓ + 2KCl
Ba²⁺ + CO₃²⁻ = BaCO3↓

CuSO4 + Ba(OH)2 = Cu(OH)2↓ + BaSO4↓
Cu²⁺ + SO₄²⁻ + Ba²⁺ + 2OH⁻ = Cu(OH)2↓ + BaSO4↓

AlCl3 + Na3PO4 = AlPO4↓ + 3NaCl
Al³⁺ + PO₄³⁻ = AlPO4↓