Chemistry's Impact and Acid-Base Concepts

Front

What property of water allows it to act as both an acid and a base in different chemical reactions?

Back

Its amphoteric nature.

Front

What is a significant impact of chemistry on human life?

Back

It has significantly increased the average human lifespan.

Front

What is the primary source of sulfuric acid that contributes to acid rain?

Back

Coal-fired power plants.

Front

In the reaction HCl + H2O ⇌ H3O+ + Cl-, which species acts as the Brønsted-Lowry base?

Back

H2O.

Front

What is a traditional characteristic used to describe acids?

Back

They are excellent at dissolving substances.

Front

Define amphoteric substances.

Back

Substances that can act as both acids and bases depending on the reaction.

Front

What is the pH scale used for?

Back

To measure the acidity or basicity of a solution.

Front

What is a strong acid? Give an example.

Back

An acid that completely dissociates in solution; e.g., hydrochloric acid (HCl).

Front

What is a weak acid? Give an example.

Back

An acid that partially dissociates in solution; e.g., acetic acid (CH3COOH).

Front

What is the role of a buffer solution?

Back

To maintain a stable pH in a solution despite the addition of acids or bases.