Question

Write the molecular, total ionic, and net ionic equations for the following reactions:

(A) Ca(OH)2(aq) + HC2H3O2(aq) ⟶
(B) H3PO4(aq) + CaCl2(aq) ⟶

Answer 1

The molecular equation for reaction (A) is Ca(OH)2(aq) + HC2H3O2(aq) ⟶ (CH3COOH)2Ca(aq) + 2 H2O(l). The total ionic equation is Ca2+(aq) + 2 OH-(aq) + H+(aq) + C2H3O2-(aq) ⟶ Ca2(C2H3O2)2-(aq) + 2 H2O(l). The net ionic equation is Ca2+(aq) + 2 OH-(aq) ⟶ Ca(OH)2(s). The molecular equation for reaction (B) is H3PO4(aq) + CaCl2(aq) ⟶ 2 HCl(aq) + Ca(H2PO4)2(aq). The total ionic equation is 3 H+(aq) + PO43-(aq) + Ca2+(aq) + 2 Cl-(aq) ⟶ 2 H+(aq) + 2 Cl-(aq) + Ca(H2PO4)2(aq). The net ionic equation is PO43-(aq) + Ca2+(aq) ⟶ Ca(H2PO4)2(aq).

Step-by-step explanation:

The molecular equation for reaction (A) Ca(OH)2(aq) + HC2H3O2(aq) → (CH3COOH)2Ca(aq) + 2 H2O(l).

The total ionic equation is: Ca2+(aq) + 2 OH-(aq) + H+(aq) + C2H3O2-(aq) → Ca2(C2H3O2)2-(aq) + 2 H2O(l).

The net ionic equation is: Ca2+(aq) + 2 OH-(aq) → Ca(OH)2(s).

The molecular equation for reaction (B) H3PO4(aq) + CaCl2(aq) → 2 HCl(aq) + Ca(H2PO4)2(aq).

The total ionic equation is: 3 H+(aq) + PO43-(aq) + Ca2+(aq) + 2 Cl-(aq) → 2 H+(aq) + 2 Cl-(aq) + Ca(H2PO4)2(aq).

The net ionic equation is: PO43-(aq) + Ca2+(aq) → Ca(H2PO4)2(aq).