Review of Acids and Bases

What could be the pH of a weak acid solution?

• 2

• 5

• 8

• 10

Which of the following is a product in the reaction of an acid with a metal?

• hydrogen gas

• water

• carbon dioxide

Which is not one of the products in the reaction of an acid with a carbonate?

• carbon dioxide

• water

• a salt

• an alkali

What pH number is considered neutral?

Which statement is true about indicators?

• Methyl orange indicator turns red in acidic solution.

• Litmus turns red in alkaline solutions.

• Phenolphthalein turns pink in acidic solution.

• Universal indicator can only tell us whether a substance is acidic or basic, but not the pH of the substance.

A substance that dissolves in water producing H⁺ ions is called:

Which piece of laboratory apparatus is not needed for the method of titration for preparing a salt?

• funnel

• burette

• pipette

• evaporating dish

Besides sulfuric acid, which other reactant could be used for preparing the salt sodium sulfate?

• metallic sodium

• sodium hydroxide

• nitric acid

• sodium chloride

A substance that reacts with an acid to give a salt and water only is:

• a reactant

• a base

• an alkali

• a carbonate

In the method of "reaction with an excess of metal/base/carbonate" for preparing a salt, the reactant used to react with acid should be:

• soluble

• insoluble

• a gas

• a liquid