Acid Base Buffers

Buffer is defined as

• ability to resist pH change

• ability to prevent pH from decreasing

• ability to resist a pH increase

• ability to resist pH change when small amount of acid added

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

Acidic buffer is made up of

• weak acid and weak base

• weak acid and its conjugate salt

• weak acid and its conjugate base

• strong acid and its conjugate base

Two beakers have liquids in them. When you add a base such as ammonia to beaker 1, the pH did not change. But when you add ammonia to beaker 2, the pH changes drastically. Choose the best explanation.

• Beaker 1 had only water and Beaker 2 contained a buffer.

• Beaker 1 contained a buffer and Beaker 2 contained only water.

• Beaker 2 contained an acid.

• The beaker that changed pH contained a buffer.

The pH of body fluids is tabilised by buffer systems. which of te following is the most effective buffer system at physiological pH?

• Protein buffer

• Bicarbonate Buffer

• Phosphate Buffer

• All of the above

• UFFER

The pH of the body fluids is stabilised by buffer systems, which of the following is the most effective buffer system at physiological pH?

• Protein Buffer

• Bicarbonate buffer

• Heemoglobin buffer

• Phosphate buffer

Tags

NGSS.HS-LS1-3

An acid has a pH

• higher than 7

• lower than 7

• 7

• greater than 14

if you add an acid to a base what will happen?

• BOOM

• it will neutralize

• it wont mix

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?

• 3

• 9

• 7

• 5

The pH scale measures...

• ...the strength of an acid.

• ...the strength of hydrogen ions.

• ...the concentration of hydrogen ions.

• ...the concentration of an acid