Question

Write correct balanced molecular, total ionic, and net ionic equations for the reactions that occur when the following substances are mixed. All are in aqueous solution except as noted.

1) magnesium chloride and sodium carbonate

2) aqueous ammonia and acetic acid

Answer 1

first write the formulas then balance them and based on solubility rules you can predict the product
1) MgCl₂(aq) + Na₂CO₃(aq)------------------------------> MgCO₃ (s) + 2 NaCl(aq) ===> molecular equation

Mg²⁺(aq) + 2Cl^- (aq) + 2Na⁺ (aq) + CO₃^2-(aq) ------------------> MgCO₃ (s) + 2Na⁺ (aq) + 2Cl^- (aq) ===>complete ionic equation

Mg²⁺(aq) + CO₃^2-(aq) --------------------------> MgCO₃ (s) ===> net ionic equation

2) NH₃ (aq) + CH₃COOH(aq) -----------------------------> CH₃COO^-(aq) + NH₄ (aq)

nh3 acts as base and it reacts with acetic acid which is acid it donates proton(H+) and forms the conjugate base CH₃COO^-(aq) and NH₄ (aq) both are soluble in water so no reaction occurs and no net ionic equation