FLASHCARD 2 ACID & BASE

Front

What is the Arrhenius definition of a base?

Back

A base is a substance that produces hydroxide ions (OH⁻) in aqueous solution.

Front

How do you calculate the pH of a solution of ammonia (NH₃) with a Kb of 1.8 × 10−5?

Back

The pH of a 0.02 M solution of ammonia (NH₃) is 11.26.

Front

Identify a pair that is not a Brønsted-Lowry acid-base pair.

Back

BF₃ / NH₃ is not a Brønsted-Lowry acid-base pair.

Front

Which solution has the highest pH: 0.1 M HCl, 0.1 M NaOH, 0.1 M CH₃COOH, or 0.1 M NH₃?

Back

0.1 M NaOH has the highest pH.

Front

In the reaction HCO₃⁻ + H₂O ⇌ H₃O⁺ + CO₃²⁻, which species acts as the Brønsted-Lowry base?

Back

H₂O acts as the Brønsted-Lowry base.

Front

Define a Brønsted-Lowry acid.

Back

A Brønsted-Lowry acid is a substance that donates protons (H⁺) in a reaction.

Front

What is the pH scale range?

Back

The pH scale ranges from 0 to 14, with 7 being neutral.

Front

What is the relationship between pH and pOH?

Back

pH + pOH = 14.

Front

What is a strong acid? Give an example.

Back

A strong acid completely dissociates in solution; for example, HCl.

Front

What is a weak base? Give an example.

Back

A weak base partially dissociates in solution; for example, NH₃.