Acid-Base Chemistry Quiz

According to the Arrhenius theory, an acid is a substance that:

• Accepts protons

• Donates protons

• Produces H⁺ ions in aqueous solution

• Produces OH⁻ ions in aqueous solution

Which of the following is a strong base according to the Arrhenius theory?

• NH₃

• CH₃COOH

• NaOH

• H₂CO₃

In the Brønsted-Lowry theory, a base is defined as:

• A proton donor

• An electron-pair acceptor

• A proton acceptor

• An H⁺ producer

Which of the following best describes a Lewis base?

• A proton donor

• A proton acceptor

• An electron-pair donor

• An electron-pair acceptor

A buffer solution typically consists of:

• A strong acid and a strong base

• A weak acid and its conjugate base

• Two strong acids

• Two strong bases

What is the Henderson-Hasselbalch equation used for?

• Calculating molarity

• Determining pressure

• Finding the pH of a buffer solution

• Measuring temperature change

Which of the following statements about strong electrolytes is true?

• They partially ionize

• They fully dissociate into ions in solution

• They do not conduct electricity

• They form covalent bonds

What happens during the self-ionization of water?

• Water molecules break down into H₂ and O₂

• Water molecules produce H₃O⁺ and OH⁻ ions

• Water becomes more acidic

• Water becomes nonpolar

What is the function of an acid-base indicator?

• To measure temperature

• To detect concentration

• To show pH change via color change

• To catalyze reactions

Which of the following best describes an amphoteric substance?

• Can only act as an acid

• Can only act as a base

• Can act as both an acid and a base

• Cannot react with water