Answer to Question #276060 in Chemistry for eli

Question

Write the balanced net ionic equation when the following solutions are mixed. If no precipitation reaction occurred, indicate “no precipitation”. Indicate the phase of the ion and/or molecule.

 

1.     AgNO₃ + CaCl₂

2.     Cu(NO₃)₂ + (NH₄)₃PO₄

3.     KOH + FeCl₂

4.     Li₂CO₃ + CaCl₂

5.     Na₂SO₄ + NH₄I

Answer 1

Solution:

(1):

2AgNO₃(aq) + CaCl₂(aq) → 2AgCl(s) + Ca(NO₃)₂(aq)

2Ag⁺(aq) + 2NO₃^-(aq) + Ca²⁺(aq) + 2Cl^-(aq) → 2AgCl(s) + Ca²⁺(aq) + 2NO₃^-(aq)

Net ionic equation: Ag⁺(aq) + Cl^-(aq) → AgCl(s)

(2):

3Cu(NO₃)₂(aq) + 2(NH₄)₃PO₄(aq) → Cu₃(PO₄)₂(s) + 6NH₄NO₃(aq)

3Cu²⁺(aq) + 6NO₃^-(aq) + 6NH₄⁺(aq) + 2PO₄^3-(aq) → Cu₃(PO₄)₂(s) + 6NH₄⁺(aq) + 6NO₃^-(aq)

Net ionic equation: 3Cu²⁺(aq) + 2PO₄^3-(aq) → Cu₃(PO₄)₂(s)

(3):

2KOH(aq) + FeCl₂(aq) → Fe(OH)₂(s) + 2KCl(aq)

2K⁺(aq) + 2OH^-(aq) + Fe²⁺(aq) + 2Cl^-(aq) → Fe(OH)₂(s) + 2K⁺(aq) + 2Cl^-(aq)

Net ionic equation: 2OH^-(aq) + Fe²⁺(aq) → Fe(OH)₂(s)

(4):

Li₂CO₃(aq) + CaCl₂(aq) → CaCO₃(s) + 2LiCl(aq)

2Li⁺(aq) + CO₃^2-(aq) + Ca²⁺(aq) + 2Cl^-(aq) → CaCO₃(s) + 2Li⁺(aq) + 2Cl^-(aq)

Net ionic equation: CO₃^2-(aq) + Ca²⁺(aq) → CaCO₃(s)

(5):

Na₂SO₄(aq) + 2NH₄I(aq) → (NH₄)₂SO₄(aq) + 2NaI(aq)

2Na⁺(aq) + SO₄^2-(aq) + 2NH₄⁺(aq) + 2I^-(aq) → 2NH₄⁺(aq) + SO₄^2-(aq) + 2Na⁺(aq) + 2I^-(aq)

Net ionic equation: No precipitation