Dissociation and PH

What defines a strong acid in terms of ionization?

• Partial ionization in solution

• Complete ionization in solution

• No ionization in solution

• Reversible ionization in solution

What is true about the ionization of weak acids?

• It leads to a high pH.

• It is complete and irreversible.

• It is partial and reversible.

• It does not occur in aqueous solutions.

What does the equilibrium of a weak acid's dissociation indicate?

• A balance between dissociated and undissociated forms

• No dissociation of the acid

• Only the dissociated form is present

• Complete dissociation of the acid

How does acid strength differ from concentration?

• Concentration is about ionization; strength is about volume.

• Neither strength nor concentration is related to ionization.

• Strength and concentration are the same.

• Strength is about ionization; concentration is about volume.

Can a weak acid be concentrated?

• Yes, if it ionizes completely

• No, weak acids are always dilute

• No, because weak acids do not ionize

• Yes, concentration is independent of acid strength

How does the pH change when moving from pH 5 to pH 3?

• Hydrogen ion concentration increases 100 times

• Increases by 10 times

• Decreases by 100 times

• Increases by 100 times

What happens to the pH as hydrogen ion concentration increases?

• pH increases

• pH remains constant

• pH decreases

• pH becomes neutral

Which acid will have a lower pH at the same concentration?

• A weak acid

• pH is not related to acid strength

• A strong acid

• Both have the same pH

What is the effect of a high concentration of hydrogen ions on pH?

• Makes the pH higher

• Makes the pH lower

• Has no effect on pH

• Makes the solution basic

Why can a strong acid achieve a low pH at most concentrations?

• Because it does not ionize

• Because it has a high equilibrium constant

• Because it ionizes partially

• Because it ionizes completely