Acid, Base and salt prep quiz

What is the formula for hydrochloric acid?

Which of the following is the formula for ethanoic acid?

• HCl (aq)

• H2SO4 (aq)

• HNO3 (aq)

• HOOCCH3 (aq)

What common property do all acids share?

• They are all solid at room temperature.

• They all share the ability to dissolve in water.

• They all have a pH level above 7.

• They all react with metals to form gases.

What is the reason given for a H+ ion being just a proton?

• Because it has no neutrons.

• Because it has no electrons.

• Because it is the smallest ion.

• Because it has no charge.

What defines a strong acid in terms of dissociation in water?

• A strong acid completely dissociates in water.

• A strong acid partially dissociates in water.

• A strong acid does not dissociate in water.

• A strong acid reacts with water to form a base.

Which of the following is an example of a weak acid?

What does pH measure?

• The concentration of OH- ions in a solution.

• The concentration of H+ ions in a solution.

• The concentration of neutral molecules in a solution.

• The temperature of the solution.

Can a very dilute strong acid have a high pH?

• Yes, because dilution increases the H+ concentration.

• No, because strong acids always have low pH.

• Yes, because dilution decreases the H+ concentration.

• No, because dilution does not affect the pH of strong acids.

Is it possible for a weak acid to have a lower pH than a strong acid?

• Yes, if the weak acid is concentrated enough.

• No, weak acids always have higher pH than strong acids.

• Yes, if the weak acid is diluted enough.

• No, because weak acids do not dissociate in water.

What is a base in the context of chemistry?

• A substance that donates H+ ions to acids.

• A substance that takes the H+ ion away from the acid.

• A substance that does not react with acids or bases.

• A substance that provides OH- ions to acids.