Cu²⁺ + S²⁻ = CuS↓
CuCI₂ + Na₂S=CuS↓ + 2NaCI
H⁺ + OH⁻ = H₂O
HCI + NaOH=NaCI +H₂O
Mg²⁺ + 2F⁻ = MgF₂↓
MgCI₂ + NiF₂=MgF₂↓ + NiCI₂
Fe³⁺ + 3OH⁻ = Fe(OH)₃↓
FeCI₃ + 3NaOH=Fe(OH)₃↓+3NaCI
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Verified answer
Cu²⁺ + S²⁻ = CuS↓
CuCI₂ + Na₂S=CuS↓ + 2NaCI
H⁺ + OH⁻ = H₂O
HCI + NaOH=NaCI +H₂O
Mg²⁺ + 2F⁻ = MgF₂↓
MgCI₂ + NiF₂=MgF₂↓ + NiCI₂
Fe³⁺ + 3OH⁻ = Fe(OH)₃↓
FeCI₃ + 3NaOH=Fe(OH)₃↓+3NaCI