Unit 4 - AP Chemistry

Front

What is a conjugate acid-base pair?

Back

A conjugate acid-base pair consists of two species that differ by the presence of a proton (H+). For example, CH₃CH₂COOH (acid) and CH₃CH₂COO⁻ (conjugate base) are a conjugate pair.

Front

What is the net ionic equation for the precipitation reaction between sodium carbonate and magnesium sulfate?

Back

CO₃²⁻ + Mg²⁺ → MgCO₃ (s) is the net ionic equation, showing only the ions that participate in the formation of the precipitate.

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 chemistry?

Back

An acid is defined as a proton donor.

Front

What is the conjugate base of H₂SO₄?

Back

The conjugate base of H₂SO₄ is HSO₄⁻.

Front

What is the definition of oxidation in a chemical reaction?

Back

Oxidation is the process in which an atom or molecule loses electrons.

Front

What is the definition of reduction in a chemical reaction?

Back

Reduction is the process in which an atom or molecule gains electrons.

Front

What is a strong acid?

Back

A strong acid is an acid that completely dissociates in solution, releasing all of its protons.

Front

What is a weak acid?

Back

A weak acid is an acid that partially dissociates in solution, establishing an equilibrium between the undissociated acid and its ions.

Front

What is the pH scale?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (strongly acidic) to 14 (strongly basic), with 7 being neutral.