Question

What is the balanced and net ionic equation for the five steps of the copper cycle?

Answer 1

Step 1:

Balanced equation: Cu (s) + 4 HNO₃ (aq) = 2 NO₂ (aq) + 2 H₂O (l) + Cu(NO₃)₂ (aq)

Net ionic equation: Cu (s) + 4 H⁺ (aq) + 2 NO₃^- (aq) = 2 NO₂ (aq) + 2 H₂O (l) + Cu⁺² (aq)

Step 2:

Balanced equation: Cu(NO₃)₂ (aq) + 2 NaOH (aq) = Cu(OH)₂ (aq) + 2 NaNO₃ (aq)

Net ionic equation: Cu⁺² (aq) + 2 OH^- (aq) = Cu(OH)₂ (s)

Step 3:

Balanced equation: Cu(OH)₂ (s) = CuO (s) + H₂O (l)

No net ionic equation

Step 4:

Balanced equation: CuO (s) + H₂SO₄ (aq) = CuSO₄ (aq) + H₂O (l)

Net ionic equation: CuO (s) + 2 H⁺ (aq) = Cu⁺² (aq) + H₂O (l)

Step 5:

Balanced equation: CuSO₄ (aq) + Zn (s) = ZnSO₄ (aq) + Cu (s)

Net ionic equation: Cu⁺² (aq) + Zn (s) = Zn⁺² (aq) + Cu (s)