Question

Classify the species as an Arrhenius base, a Bronsted-Lowry base or a Lewis base, in aqueous solution, is possible for a base to be of more than one type.

Arrhenius bases: NH_3(aq) Br^-(aq) NaOH(aq)

Bronsted-Lowry bases: NH_3(aq) Br^-(aq) NaOH(aq)

Lewis bases: NH_3(aq) Br^-(aq) NaOH(aq)

Answer 1

Concepts and reason

According to Arrhenius theory, the substance or molecule that produces in solution is represented as Arrhenius base.

According to Bronsted – Lowry theory, the substance or molecule that accepts proton is represented as Bronsted – Lowry base.

According to Lewis theory, the substance that donates lone pair electron is represented as Lewis base.

Fundamentals

Example for Arrhenius base:

The above substance Potassium hydroxide produce ion in solution and it is represented as Arrhenius base.

Example for Bronsted base:

The substance that accepts proton is represented as bronsted base. In the above example, is bronsted base.

Example for Lewis base:

In the above example, donates lone pair electron to, therefore, it is Lewis base.

The species is not Arrhenius base.

Arrhenius base:

The species is not Bronsted – Lowry base.

There is no species that are not Lewis base.

Lewis base:

Ans:

From the given species, an Arrhenius base, Bronsted – Lowry base or a Lewis base in aqueous solution is given below:

Arrhenius bases:

Bronsted – Lowry bases:

Lewis bases: