Exploring Acid-Base Theories

What is the Arrhenius definition of an acid?

• An Arrhenius acid is a substance that increases the concentration of H+ ions in solution.

• An Arrhenius acid is a substance that increases the concentration of OH- ions in solution.

• An Arrhenius acid is a substance that decreases the concentration of H+ ions in solution.

• An Arrhenius acid is a substance that has a pH greater than 7.

What is the Arrhenius definition of a base?

• A base is a substance that forms salts when mixed with acids.

• A base is a substance that donates protons in solution.

• A base is a substance that increases the concentration of hydroxide ions (OH-) in solution.

• A base is a substance that decreases the concentration of hydrogen ions (H+) in solution.

How does the Bronsted-Lowry theory define an acid?

• A substance that donates a proton.

• A substance that releases hydroxide ions.

• A substance that accepts a proton.

• A substance that increases the pH of a solution.

How does the Bronsted-Lowry theory define a base?

• A base is a substance that donates protons.

• A base is a substance that reacts with acids to form salts.

• A base is a substance that increases the concentration of hydroxide ions.

• A base is a substance that accepts protons.

What is a Lewis acid?

• A Lewis acid is a substance that increases pH.

• A Lewis acid is an electron pair donor.

• A Lewis acid is an electron pair acceptor.

• A Lewis acid is a proton donor.

What is a Lewis base?

• A Lewis base is a substance that increases the concentration of hydroxide ions in solution.

• A Lewis base is a proton donor.

• A Lewis base is an electron pair acceptor.

• A Lewis base is an electron pair donor.

What is the difference between strong and weak acids?

• Weak acids have a higher pH than strong acids.

• Strong acids fully dissociate in solution; weak acids partially dissociate.

• Strong acids are always more corrosive than weak acids.

• Strong acids are less reactive than weak acids.

What is the difference between strong and weak bases?

• Both strong and weak bases dissociate equally in water.

• Strong bases fully dissociate in water; weak bases partially dissociate.

• Strong bases are always acidic; weak bases are always neutral.

• Weak bases fully dissociate in water; strong bases do not dissociate.

What is the pH scale and what does it measure?

• The pH scale measures temperature changes in a solution.

• The pH scale measures the acidity or alkalinity of a solution.

• The pH scale indicates the color of a solution.

• The pH scale measures the density of a solution.

What is the significance of the pKa value?

• The pKa value measures the concentration of a solution.

• The pKa value indicates the temperature of a solution.

• The pKa value signifies the strength of an acid, with lower values indicating stronger acids.

• The pKa value is used to determine the color of a substance.