Strength of Acids and Alkalis

Which pH levels indicated a strong acid?

• 1-3

• 4-6

• 8-11

• 12-14

Which pH level indicates a weak alkali?

• 1-3

• 4-6

• 8-11

• 12-14

Which pH level indicates a weak acid?

• 1-3

• 4-6

• 8-11

• 12-14

Which pH level indicates a strong alkali?

• 1-3

• 4-6

• 8-11

• 12-14

Rain water is slightly acidic. What is its pH?

• 1.0

• 5.6

• 7.0

• 8.2

What does a pH scale do?

• A. Tells if a substance is an acid or base.

• B. Measures the strength and weakness of acids and alkalis.

• C. Guides the pH values of aqueous substances.

• D. Both statements A and B are correct.

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

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

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

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

This solution is filled with:

• Weak Acid

• Strong Base

• Strong Acid

• Weak Base

Tags

NGSS.HS-PS1-5

Which of the following is a weak alkali?

• sodium hydroxide, NaOH

• lithium hydroxide, LiOH

• ammonia, NH₃

• barium hydroxide, Ba(OH)₂