Acid Base Buffers

What does the value of 7 on the pH scale indicate?

• Acid

• Base

• Neutral

• None of the above

What is the charge of acids ion?

• H+

• OH-

• H-

• OH+

What is the charge of the base ion?

• H+

• H-

• OH+

• OH-

A(n) ______ is a substance with a pH less than 7

• Acid

• Alkaline

• Base

• Buffer

What might happen if buffers did not exist within the human body?

• Our blood and other bodily fluids might become too acidic or basic.

• Our stomach acid would not be able to break down food.

• We would not be able to process glucose within our cells.

• We would not be able to inhale oxygen into our lungs.

Tags

NGSS.HS-LS1-3

How is our body able to maintain a consistent pH (acidity level) even when the food we consume can be very acidic?

• Buffers in our body resist a change in pH

• Our diets naturally have a constant pH

• Water is resistant to a change in pH

Answer explanation

Buffers are solutions that resist changes in pH

Tags

NGSS.HS-LS1-3

Another name for an alkaline substance is a(n) ________.

• Acid

• Base

• Covalent bond

• Solution

The pH scale is a range from:

• 1-7

• 0-14

• 1-5

• 1-20

What is the primary function of an acid-base buffer in a solution?

• To maintain a constant pH

• To increase the acidity

• To decrease the basicity

• To neutralize the solution

Which of the following is a common example of a buffer system in the human body?

• Carbonic acid-bicarbonate buffer

• Hydrochloric acid buffer

• Sodium chloride buffer

• Sulfuric acid buffer