Which of the following is NOT one of the body’s chemical buffering systems?
A) phosphate
B) bicarbonate
C) hydrochloride
D) hydrochloride, bicarbonate and phosphate are all buffering systems
Table of Contents
Answer:
The correct answer is option C.
Why option A is incorrect:
Phosphate buffered is a solution which is commonly used in biological research. It is a water-based salt solution containing sodium chloride and sodium hydrogen phosphate. Therefore, this option is incorrect.
Why option B is incorrect:
Bicarbonates are also a buffer solution which maintains PH level in the bloodstream. Therefore, this option is wrong.
Why option D is incorrect:
Bicarbonates and phosphates are buffered solution; therefore, this option is also wrong.
Explanation:
Hydrochloride is not one of the body’s chemical buffering systems. Hydrochloric acid is a strong acid. It is not a weak acid, so the combination of these two solutes cannot make a buffer solution.
Chemical Buffer:
A buffer is a solution that resists dramatic changes in PH. Buffers are composed of a weak acid or a weak base; therefore, it maintains the blood PH level in a body.
For example:
A chemical buffer can be made of dissolved acetic acid, which is a weak acid and sodium acetate which is a salt derived from that acid.
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