Strong and Weak Acids

Ranging from 0 to 14, a pH value indicates how acidic or basic a solution is.  Which of these pH values would be a strong acid?

• 2

• 6

• 9

• 13

in aqueous solution, H+ ions exist as

• H₃0⁺

• H₉O₄⁺

• Neither of these

• either H₃0⁺ or H₉O₄⁺

If you have a solution that is very acidic with a pH of 3.5, what can you do to raise the pH? 

• add more acid

• add more water

• increase the temperature

• add a base

If an acid is combined with a base of equal strength, the result will most likely be

• a neutral solution.

• a stronger acid.

• impossible to tell without testing the pH.

• a stronger base

Which of the following is true about acids and bases?

• The lower the pH, the stronger the acid

• the higher the pH, the stronger the acid

• The lower the pH, the more neutral the acid

• The higher the pH, the weaker the base

Which type of ion does an acid produce when it is dissolved in water?

• oxide

• oxygen

• hydronium

• hydroxide

HCl is aciidic in

• in gaseous state

• in benzene solution

• in aqueous solution

• in any of these

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

• Completely ionizes in solution

• Partially ionizes in solution

• Has a pH close to 7

• Forms a weak conjugate base

What is the pH range of a weak acid?

• 0-3

• 3-6

• 7-10

• 11-14

Which of the following acids is considered a strong acid?

• Acetic acid (CH3COOH)

• Hydrochloric acid (HCl)

• Citric acid (C6H8O7)

• Carbonic acid (H2CO3)