Question

Hydrogen chloride gas, HCl, is an example of an Arrhenius acid because _________.

Answer 1

Hydrogen chloride gas, HCl, is an example of an Arrhenius acid because it produces Hydrogen Ions ( H⁺ ) in water.

Step-by-step explanation:

Acid and Bases are defined according to three different theories and concepts.

i) Arrhenius Concept

ii) Lowry Bronsted Theory

iii) Lewis Theory

According to Arrhenius Concept of Acid and Base, "Acid is any specie which when dissolved in water ionizes to produce H⁺ ions".

Example:

HCl → H⁺ + Cl⁻

H₂SO₄ → 2 H⁺ + SO₄²⁻

While, "Bases are those species which when dissolved in water produces Hydroxyl Ions (OH⁻)".

Example:

NaOH → Na⁺ + OH⁻

Mg(OH)₂ → Mg²⁺ + 2 OH⁻

Answer 2

Hydrogen chloride gas, HCl, is an example of an Arrhenius acid because in aqueous solution (water) it forms hydrochloric acid.
An Arrhenius acid is a substance that dissociates in water to form hydrogen ions or protons.
Hydrogen chloride gas dissociate in aqueous solution to form hydrogen ions (H⁺) and chloride anion (Cl⁻):
HCl(aq) → H⁺(aq) + Cl⁻(aq).