Respuesta :
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.
Answer: The chemical equations are written below.
Explanation:
Double displacement reaction is defined as the reaction in which exchange of ions takes place.
The general chemical equation for double displacement reaction follows:
[tex]AB+CD\rightarrow CB+AD[/tex]
For the given options:
- Option 1: Sodium chloride and copper sulfate
The chemical equation for the reaction of sodium chloride and copper sulfate follows:
[tex]2NaCl+CuSO_4\rightarrow Na_2SO_4+CuCl_2[/tex]
By Stoichiometry of the reaction:
2 moles of sodium chloride reacts with 1 mole of copper sulfate produces 1 mole of sodium sulfate and 1 mole of copper chloride.
- Option 2: Sodium hydroxide and copper sulfate
The chemical equation for the reaction of sodium hydroxide and copper sulfate follows:
[tex]2NaOH+CuSO_4\rightarrow Na_2SO_4+Cu(OH)_2[/tex]
By Stoichiometry of the reaction:
2 moles of sodium hydroxide reacts with 1 mole of copper sulfate produces 1 mole of sodium sulfate and 1 mole of copper hydroxide.
- Option 3: Sodium hydrogen phosphate and copper sulfate
The chemical equation for the reaction of sodium hydrogen phosphate and copper sulfate follows:
[tex]Na_2HPO_4+CuSO_4\rightarrow Na_2SO_4+CuHPO_4[/tex]
By Stoichiometry of the reaction:
1 mole of sodium hydrogen phosphate reacts with 1 mole of copper sulfate produces 1 mole of sodium sulfate and 1 mole of copper hydrogen phosphate.
- Option 4: Sodium chloride and silver nitrate
The chemical equation for the reaction of sodium chloride and silver nitrate follows:
[tex]NaCl+AgNO_3\rightarrow NaNO_3+AgCl[/tex]
By Stoichiometry of the reaction:
1 mole of sodium chloride reacts with 1 mole of silver nitrate produces 1 mole of sodium nitrate and 1 mole of silver chloride.
- Option 5: Sodium hydroxide and silver nitrate
The chemical equation for the reaction of sodium hydroxide and silver nitrate follows:
[tex]NaOH+AgNO_3\rightarrow NaNO_3+AgOH[/tex]
By Stoichiometry of the reaction:
1 mole of sodium hydroxide reacts with 1 mole of silver nitrate produces 1 mole of sodium nitrate and 1 mole of silver hydroxide.
- Option 6: Sodium hydrogen phosphate and silver nitrate
The chemical equation for the reaction of sodium hydrogen phosphate and silver nitrate follows:
[tex]Na_2HPO_4+2AgNO_3\rightarrow 2NaNO_3+Ag_2HPO_4[/tex]
By Stoichiometry of the reaction:
1 mole of sodium hydrogen phosphate reacts with 2 moles of silver nitrate produces 2 moles of sodium nitrate and 1 mole of silver hydrogen phosphate.
Hence, the chemical equations are written above.
