1. Write the molecular equation, ionic equation, and net ionic equation for the reaction between calcium chloride and ammonium phosphate.

(molecular) 3 CaCl₂ (aq) + 2 (NH₄) ₃PO₄ (aq) ⇄ Ca₃ (PO₄) ₂ (s) + 6 NH₄Cl (aq)

(ionic) 3 Ca²⁺ (aq) + 6 Cl⁻ (aq) + 6 NH₄⁺ (aq) + 2 PO₄³⁻ (aq) ⇄ Ca₃ (PO₄) ₂ (s) + 6 NH₄⁺ (aq) + 6 Cl⁻ (aq)

(net ionic) 3 Ca²⁺ (aq) + 2 PO₄³⁻ (aq) ⇄ Ca₃ (PO₄) ₂ (s)

Explanation:

The molecular equation includes al the species in the molecular form.

3 CaCl₂ (aq) + 2 (NH₄) ₃PO₄ (aq) ⇄ Ca₃ (PO₄) ₂ (s) + 6 NH₄Cl (aq)

The ionic equation includes all the ions (species that dissociate in water) and the species that do not dissociate in water.

3 Ca²⁺ (aq) + 6 Cl⁻ (aq) + 6 NH₄⁺ (aq) + 2 PO₄³⁻ (aq) ⇄ Ca₃ (PO₄) ₂ (s) + 6 NH₄⁺ (aq) + 6 Cl⁻ (aq)

The net ionic equation includes only the ions that participate in the reaction and the species that do not dissociate in water. In does not include spectator ions.

3 Ca²⁺ (aq) + 2 PO₄³⁻ (aq) ⇄ Ca₃ (PO₄) ₂ (s)