Answer:
General equation for a double-displacement reaction:
AB + CD --> AC + BD
• sodium chloride – NaCl copper sulfate – CuSO₄
NaCl + CuSO₄ --> Na₂SO₄ + CuCl₂
The products formed are sodium sulfate and copper (II) chloride.
Copper (II) chloride forms a blue colored solution.
• sodium hydroxide – NaOH copper sulfate – CuSO₄
NaOH + CuSO₄ --> Na₂SO₄ + Cu(OH)₂
The products formed are sodium sulfate and copper (II) hydroxide.
Copper (II) hydroxide forms a blue colored solution.
• sodium phosphate – Na₂HPO₂ copper sulfate – CuSO₄
Na₂HPO₄ + CuSO₄ --> Na₂SO₄ + CuHPO₄
The products formed are sodium sulfate and copper (II) hydrogen phosphate.
Copper (II) hydrogen phosphate forms a blue colored solution.
• sodium chloride – NaCl silver nitrate – AgNO₃
NaCl + AgNO₃--> AgCl + NaNO₃
The products formed are silver chloride and sodium nitrate.
Silver chloride forms a white precipitate.
• sodium hydroxide – NaOH silver nitrate – AgNO₃
NaOH + AgNO₃ --> NaNO₃ + AgOH
The products formed are silver hydroxide and sodium nitrate.
Silver hydroxide forms a white precipitate.
• sodium phosphate – Na₂HPO₄ silver nitrate – AgNO₃
Na₂HPO₄ + AgNO₃ --> NaNO₃ + Ag₂HPO₄
The products formed are sodium nitrate and silver hydrogen phosphate.
Silver hydrogen phosphate forms a colorless solution.
Explanation:
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