6.3 The strength of acids and alkalis

Which of the following is a weak alkali?

• sodium hydroxide, NaOH

• lithium hydroxide, LiOH

• ammonia, NH₃

• barium hydroxide, Ba(OH)₂

Which pH level indicates a strong alkali?

• 1-3

• 4-6

• 8-11

• 12-14

An acid that does not break apart completely.
Range from 4-7 on the pH scale.

• Strong Acid
• Strong Base
• Weak Acid
• Weak Base

An acid that breaks apart completely. 0-4 on the pH scale,

• Strong Acid
• Weak Acid
• Weak Base
• Strong Base

H₂SO₄

• Weak acid

• Strong alkali

• Strong acid

• Weak alkali

What completely ionizes in solution?

• Weak acids

• Strong acids

• Strong Salts

• Neutral salts

Completely dissociates in water to yield H⁺ ions

• Strong acid

• Weak acid

• Strong alkali

• Weak alkali

Completely dissociates in water to form OH^- ions.

• Strong acid

• Strong alkali

• Weak acid

• Weak alkali

Only partially dissociates in water to yield H⁺ ions

• Strong acid

• Strong alkali

• Weak acid

• Weak alkali

Only partially dissociates in water to form OH^- ions.

• Strong acid

• Strong alkali

• Weak acid

• Weak alkali