Write down the molecular and ionic reaction equations that can be used to determine the acid:

Write down the molecular and ionic reaction equations that can be used to determine the acid: a) hydrochloric b) sulfuric c) nitric

Let’s use the already written reaction equations from the previous task.

а) AgNO₃ + HCl = HNO₃ + AgCl↓;
Ag⁺ + NO₃⁻ + H⁺ + Cl⁻ = H⁺ + NO₃⁻ + AgCl⁰↓;
Ag⁺ + Cl⁻ = AgCl⁰↓.
b) BaCl₂ + H₂SO₄ = 2HCl + BaSO₄↓;
Ba²⁺ + 2Cl⁻ + 2H⁺ + SO₄²⁻ = 2H⁺ + 2Cl⁻ + BaSO₄⁰↓;
Ba²⁺ + SO₄²⁻ = BaSO₄ ⁰↓.
в) Cu + 4HNO₃ = Cu(NO₃)₂ + 2H₂O + 2NO₂↑;
Cu⁰ + 4H⁺ + 4NO₃⁻ = Cu²⁺ +2NO₃⁻ + 2H₂O⁰ + 2NO₂⁰↑;
Cu⁰ + 4H⁺ + 4NO₃⁻ = Cu²⁺ +2NO₃⁻ + 2H₂O⁰ + 2NO₂⁰↑.