Understanding Acid and Base Dissociation Constants

What is the main difference between strong and weak acids?

• Strong acids partially ionize in water.

• Weak acids do not ionize at all.

• Strong acids fully ionize in water.

• Weak acids fully ionize in water.

Which of the following is a characteristic of a weak acid?

• It has a very high Ka value.

• It does not form an equilibrium.

• It fully dissociates in water.

• It establishes an equilibrium with its conjugate base.

What does the acid dissociation constant (Ka) represent?

• The concentration of water in a solution.

• The speed at which an acid dissociates.

• The ratio of products to reactants at equilibrium for an acid.

• The temperature at which an acid dissociates.

Why is water often ignored in equilibrium expressions for acids?

• Water reacts too slowly to be considered.

• Water's concentration is effectively constant.

• Water's concentration is too high to measure.

• Water is not present in the reaction.

What is the base dissociation constant (Kb) used for?

• Measuring the concentration of water.

• Calculating the pH of strong bases.

• Measuring the strength of strong acids.

• Determining the equilibrium of weak bases.

How does the Ka value relate to the strength of an acid?

• Ka value does not relate to acid strength.

• A smaller Ka value indicates a stronger acid.

• A larger Ka value indicates a weaker acid.

• A larger Ka value indicates a stronger acid.

Which acid is stronger based on their Ka values: acetic acid or carbonic acid?

• Acetic acid is stronger.

• Neither is strong.

• Both are equally strong.

• Carbonic acid is stronger.

What does a Ka value greater than 1 indicate about an acid?

• The acid is strong.

• The acid does not dissociate.

• The acid is weak.

• The acid is neutral.

What can be inferred if an acid has a Ka value less than 1?

• The acid is neutral.

• The acid is strong.

• The acid is weak.

• The acid fully dissociates.

What is the relationship between the size of the Ka value and the strength of an acid?

• Ka size does not affect acid strength.

• Larger Ka means stronger acid.

• Smaller Ka means stronger acid.

• Larger Ka means weaker acid.