Unit 4 - AP Chemistry

Front

What is the role of water in the reaction H⁺ + H₂O → H₃O⁺?

Back

Water acts as a base accepting a proton.

Front

What is the relationship between the strength of an acid and its conjugate base?

Back

The stronger the acid, the weaker its conjugate base.

Front

What is the oxidation number of nitrogen in NO₂^1-?

Back

3

Front

What happens to an atom that loses electrons during a chemical reaction?

Back

The atom is oxidized.

Front

How is an acid defined in terms of protons?

Back

An acid is defined as a proton donor.

Front

What is a base in terms of proton acceptance?

Back

A base is defined as a proton acceptor.

Front

Define oxidation in terms of electron transfer.

Back

Oxidation is the loss of electrons.

Front

Define reduction in terms of electron transfer.

Back

Reduction is the gain of electrons.

Front

What is the significance of conjugate acid-base pairs?

Back

Conjugate acid-base pairs help to understand the transfer of protons in chemical reactions.

Front

What is the pH scale and what does it measure?

Back

The pH scale measures the acidity or basicity of a solution.